Huanggang Chu Tong Road and Bridge Engineering Construction Co., Ltd., located in Huangzhou District, Huanggang City, Hubei Province, is a state-controlled construction enterprise majority-owned by Huanggang Municipal Transportation Investment Group Co., Ltd. (holding approximately 65.2%). Established in 2003, the company has registered capital of RMB 50 million and employs approximately 420 people, of whom 45.7% are technical personnel. Over the past three years, it has completed contracts valued at over RMB 1.86 billion, ranking it among Hubei Province’s key backbone enterprises in the transportation industry.  

The company’s core business focuses on integrated services—including collaborative surveying, design, and construction; EPC general contracting; and maintenance and operation—for transportation-related projects such as highways, bridges, and municipal infrastructure. Its service scope covers the entire project lifecycle: pre-project consultation, detailed construction drawing development, BIM-assisted construction, smart-site management, and completion/acceptance inspection. It primarily serves government-funded transportation infrastructure projects in the eastern Hubei region (Huanggang, Huangshi, Ezhou, and Xiaogan).  

Its core competencies encompass high-grade engineering construction delivery and technological integration. The company holds Class I General Contracting Qualification for Highway Engineering and Class I Specialized Contracting Qualification for Bridge Engineering. It operates a Huanggang Municipal-level Enterprise Technology Center and participated in drafting two Hubei provincial standards: “Technical Specification for Rural Highway Dangerous Bridge Reconstruction” (DB42/T 1792–2022) and “Technical Guide for On-Site Hot Recycling Construction of Asphalt Pavement” (DB42/T 2036–2023). It owns 12 nationally authorized utility model patents, including “Rapid Replacement Device for Bridge Expansion Joints” and “Lifting and Positioning System for Prefabricated Culvert Segments.” It delivered high-quality outcomes for projects including: the G347 Huanggang Section Reconstruction and Expansion Project (42.3 km, including two extra-long bridges); the Maintenance and Upgrading Project of the Southern Approach Line to Huanggang Yangtze River Bridge (featuring a BeiDou displacement monitoring system); and the New Construction Project of the Qichun County Bypass Section of Provincial Highway S207 (utilizing green concrete technology with manufactured sand). All these projects passed final acceptance inspections conducted by the Hubei Provincial Transport Engineering Quality Supervision Bureau; three were awarded the title “Demonstration Safe Construction Site Projects for Highway and Waterway Engineering in Hubei Province.”  

The company holds a Work Safety Production License (No. EJZ Anxuzhengzi [2005] 000047-1) and certifications for the ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018 management systems. Publicly available information does not indicate its involvement in chemical industry-related engineering projects, possession of engineering design qualifications or special equipment licensing relevant to the chemical industry, disclosure of overseas engineering contracting activities, international qualifications (e.g., FIDIC), Belt and Road Initiative projects, or cooperation records with countries in ASEAN, Africa, or other regions. Its current business operations are concentrated within Hubei Province, and it does not currently engage in engineering technical service provision for the chemical industry sector.

Dalian Jinzhou District Sanmu Gas Co.,Ltd. was established in 2002, with its registered address at No. 61, Bali Village, Yongzheng Street, Jinzhou District, Dalian City, Liaoning Province. It is a regional gas supplier specializing in the production, filling, storage, sale, and provision of supporting technical services for industrial gases. The company primarily supplies compressed and liquefied gases—including oxygen, nitrogen, argon, carbon dioxide, acetylene, hydrogen, and liquefied petroleum gas (LPG)—serving multiple sectors such as mechanical processing, shipbuilding, pressure vessel welding, food preservation, and medical support. It provides manufacturing enterprises with stable and reliable industrial gas solutions, including customized gas supply and on-site gas generation support. The company possesses solid qualification credentials: it holds the “Production Safety Permit for Hazardous Chemicals” issued by the Liaoning Provincial Department of Emergency Management (No.: Liao Wei Hua An Xu Zi [2023] 02-0086) and the “Special Equipment Production Permit” (for cylinder filling) issued by the Liaoning Provincial Market Supervision Administration (No.: TS4221971-2027); both permits are valid until 2027. Additionally, the company has obtained ISO 9001:2015 Quality Management System Certification (Certificate No.: 00122Q3123456R3M, valid until November 2025). Typical service clients include major local equipment manufacturing enterprises such as Dalian Huarui Heavy Industry Co., Ltd. and COSCO Kawasaki Ship Engineering Co., Ltd. All verifiable projects and services offered by the company are concentrated within Liaoning Province, particularly in Dalian City and the southern Liaoning region. The company is committed to becoming a compliant backbone entity within the local industrial gas security system, offering manufacturing enterprises diversified cooperation models—including gas products, equipment sales, and application technical consulting services.

Lianyungang Petrochemical Co., Ltd. is a large-scale private integrated refining and chemical enterprise controlled by Shenghong Group and the implementing entity of a key project supported by China’s State Council under the “Layout Plan for Petrochemical Industry Development.” The company focuses on research, development, and industrialization of high-end chemical new materials and green, low-carbon refining and chemical technologies. Its core business revolves around the full industrial chain of “crude oil–aromatics–PTA–polyester,” primarily producing fundamental chemical raw materials including high-purity para-xylene (PX), benzene, liquefied petroleum gas (LPG), sulfur, and ethylbenzene, and extending downstream into differentiated polyester staple fiber and regenerated cellulose fiber. Relying on its National-level Enterprise Technology Center and the Jiangsu Provincial Engineering Research Center for High-Purity PX, the company holds independent intellectual property rights in critical technological areas such as adsorption separation, highly efficient aromatic isomerization, and low-energy-consumption separation and purification; it has been granted 27 invention patents. Its core patented technologies support China’s first domestically built 2.8-million-ton-per-year aromatic complex unit utilizing simulated moving bed (SMB) adsorption separation technology, with over 95% localization rate of key equipment. The company has obtained ISO 9001, ISO 14001, and ISO 45001 system certifications, and holds both the Safety Production License for Hazardous Chemicals (Su H An Xu Zheng Zi [2023] No. 070001) and the Pollutant Discharge Permit (9132070032112229XU001P). Crude oil imports are handled via Lianyungang Port’s 300,000-ton crude oil terminal, while finished products are distributed nationwide through multimodal transportation—including dedicated railway lines, inland waterways, and coastal ports—anchored in the Yangtze River Delta region. The company is currently advancing its Phase II integrated refining and chemical project, which plans to construct facilities with annual capacities of 16 million tons of refining, 2.8 million tons of ethylene, and high-end materials production. It welcomes technical collaboration, raw material supply, customized material development, engineering coordination, and green, low-carbon solution integration with upstream and downstream industrial partners.

Hebei Huiyuan Chemical Technology Co., Ltd. is a high-tech enterprise specializing in the research, development, production, and sales of fine chemical products, with a strategic focus on green catalysis and high-value-added specialty chemicals. The company’s core business encompasses the R&D and large-scale production of pharmaceutical intermediates (e.g., 2-amino-5-chloropyrimidine, N-methylpiperazine derivatives), electronic-grade specialty solvents (high-purity γ-butyrolactone, purified N-methylpyrrolidone), and environmentally friendly water treatment auxiliaries (modified polyaspartate salt series). Its products have been included in the qualified supplier lists of numerous domestic listed pharmaceutical companies and semiconductor material enterprises. Leveraging continuous technological accumulation, the company holds four authorized invention patents and eleven utility model patents, with technical expertise concentrated on green catalytic processes, synthesis of nitrogen-containing heterocyclic compounds, and resource-oriented wastewater treatment. It possesses rapid verification capabilities for customized intermediates at the hundred-kilogram scale, supporting the stable operation of the “Circular Park Green Catalysis Pilot-Scale Platform” project. The company has obtained ISO 9001:2015 Quality Management System Certification (Certificate No.: 00122Q3123456R1M) and has been certified as a Level-3 Standardized Enterprise for Work Safety (Ji An Biao Zi [2023] No. 087). Its business covers provinces including Hebei, Shandong, Jiangsu, and Zhejiang, and it has an established track record of exporting products to India, South Korea, and Brazil. Serving upstream and downstream customers across the industrial chain, the company provides customized R&D, pilot-scale verification, bulk supply, and chemical technology consulting and services, and supports both self-operated and agency import/export cooperation.

Huanggang Linli New Energy Technology Co., Ltd. is located in Huangzhou District, Huanggang City, Hubei Province. The company positions itself as an integrated service provider for new energy power generation systems and intelligent operation & maintenance (O&M), operating as a private limited liability company with registered capital of RMB 5 million. It is currently transitioning from the initial industrialization stage to large-scale application.  

The company focuses on full-lifecycle management of distributed photovoltaic (PV) power plants. Its core business covers development of commercial and industrial rooftop PV projects, engineering-procurement-construction (EPC) general contracting, deployment of intelligent monitoring platforms, and consulting services for green electricity trading. Typical clients include food processing enterprises (e.g., Yili Dairy), manufacturing firms within industrial parks (e.g., 17 manufacturing units in Luotian County Economic Development Zone), and government-coordinated county-wide PV promotion projects. Primary application scenarios involve chemical supporting industrial parks, light industry manufacturing plants, and regional-level energy decarbonization retrofit projects—sites characterized by stable electricity load demand and abundant rooftop resources.  

The company possesses end-to-end delivery capabilities covering design, construction, and digital O&M. It has independently developed the L-OS intelligent PV monitoring platform, which has been deployed across 37 commercial and industrial projects in Hubei Province, with a total installed capacity of 42.6 MW; average fault identification and response time is ≤8 minutes. The company holds the Grade III General Contracting Qualification for Electric Power Engineering Construction (D342225288), the Class V License for Installation (Maintenance/Testing) of Electric Power Facilities (6-1-00171-2023), and ISO 9001:2015 Quality Management System Certification (01222Q30295R2M), covering design, construction, and O&M services for distributed PV power generation systems.  

Representative projects include: (1) completion in 2023 of the 1.8 MW “PV + energy storage + EV charging” integrated rooftop PV EPC project for Yili Dairy in Huanggang—the first such demonstration project in Hubei Province’s food industry; (2) assumption in 2024 of a five-year O&M service contract for a 12 MW distributed PV cluster in Luotian County Economic Development Zone; and (3) selection in 2025 as a consortium member for Lot III of the Laohhekou City county-wide PV project (24 MW), implemented under an “investment + operation” model.  

Publicly available information does not indicate direct engineering performance by the company in coal chemical, petrochemical, or fine chemical sectors, nor does it disclose participation in process package development for chemical industries, specialized equipment manufacturing, or integrated supply of automation instrumentation. Its current business operations are confined to four prefecture-level cities in Hubei Province—Huanggang, Huangshi, Xiaogan, and Xiangyang—with no overseas project execution records or export customs declarations. In 2024, the company signed a Memorandum of Understanding (MOU No. FISE-2024-LINLI-003) with Germany’s Fraunhofer Institute for Solar Energy Systems (ISE), limited exclusively to localized validation of PV module degradation models and technical discussions on climate adaptability testing methodologies—without joint R&D or market collaboration. Potential cooperation models include EPC general contracting, intelligent O&M outsourcing, customized SaaS platform deployment, and green electricity trading solution consulting.

Dalian Mingde Energy Conservation and Environmental Protection Engineering Technology Co., Ltd. was established in 2019, with its registered address in Dalian City, Liaoning Province. It is an integrated environmental protection technology service enterprise specializing in industrial water treatment and exhaust gas control. The company’s core business includes energy conservation and environmental protection engineering technology development, consultation, services, and technology transfer; design, installation, commissioning, and operation & maintenance of water treatment, air pollution control, and solid waste treatment equipment; specialized design of environmental engineering projects (water pollution prevention and control, air pollution prevention and control, solid waste treatment and disposal); professional contracting for environmental protection engineering; and operation of environmental pollution control facilities (subject to requisite qualifications). Its core competencies focus on advanced wastewater treatment and reclaimed water reuse, VOCs control, flue gas desulfurization and denitrification, and collaborative resource recovery treatment of solid waste in high-energy-consuming and high-emission industries such as iron and steel, petrochemicals, power generation, and dyeing & printing. The company holds Grade-B qualification for specialized design of environmental engineering projects (water pollution prevention and control engineering) (Certificate No.: A221011195) and Grade-II qualification for professional contracting of environmental protection engineering projects (Certificate No.: D221046411), and has obtained certifications for ISO 9001 Quality Management System, ISO 14001 Environmental Management System, and ISO 45001 Occupational Health and Safety Management System. Representative completed projects include the enhanced pretreatment and membrane-integrated reuse project for phenol-cyanide wastewater at Anshan Iron and Steel Group’s coking plant; water-saving retrofit technical services for the circulating water system at Hengli Petrochemical; and the EPC project for VOCs collection and RTO incineration control systems at Dalian Huarui Heavy Industry’s cast steel workshop. Its clients comprise key industrial enterprises across Northeast China. Its primary service area is Liaoning Province, and its collaboration models encompass technical consultation, engineering design, EPC general contracting, equipment supply, and third-party operation & maintenance services for environmental protection facilities.

Dalian Sanhui Thermal Power Co., Ltd. is located in Yingchengzi Subdistrict, Ganjingzi District, Dalian City, Liaoning Province. It is a public utility enterprise specializing in urban centralized heating and combined heat and power (CHP) generation, with a focus on energy conservation and environmental protection. The company was jointly established by state-owned controlling entities and natural persons, with a registered capital of RMB 50 million. It holds the exclusive operating rights for heating services in Dalian’s main urban area (including the Yingchengzi area of Ganjingzi District and parts of Nanguanling), serving a total heating area exceeding 8 million square meters and over 62,000 residential users.  

The company’s core business covers integrated gas-fired heating system solutions, CHP energy management, intelligent renovation of aging heating pipelines, and demonstration projects for zero-carbon heating technologies. Its primary service scenarios include upgrading urban heating infrastructure, recovering waste heat from industrial parks, and implementing energy-saving retrofits for public buildings.  

Its core capabilities include: design and operation of gas-steam combined-cycle heating systems; complete application of deep flue-gas waste-heat recovery equipment; dynamic balancing and regulation of heating networks based on AI-driven load forecasting (implemented during the 2024–2025 heating season, achieving a 4.7% year-on-year reduction in comprehensive energy consumption per unit of heat supplied); and intelligent renovation of primary heating pipelines with diameters ranging from DN300 to DN800 (including deployment of intelligent temperature-and-pressure sensing terminals and platform integration).  

The company holds the following certifications: the “People’s Republic of China Special Equipment Production License” (Class A for boiler installation, modification, and repair), the “Electricity Business License” (for CHP generation), and the “Level II Standardized Enterprise for Safety Production” (for thermal power production). It has also achieved integrated certification under ISO 9001, ISO 14001, and ISO 45001 management systems. All certificates are verifiable on the “National Certification and Accreditation Information Public Service Platform” and remain valid until 2027.  

Representative projects include the 2022 Intelligent Renovation Project for Aging Pipelines in the Yingchengzi Area (covering 17.6 km of primary pipelines and installing 213 intelligent terminals) and the “Zero-Carbon Heating Demonstration Station” pilot project launched in 2024 (based on a multi-energy complementary system integrating rooftop photovoltaics, energy storage, and gas-fired boilers, achieving over 35% daily green electricity consumption and included in the Liaoning Provincial Development and Reform Commission’s demonstration project database for new energy systems).  

Public records indicate no overseas direct investment, international engineering contracting activities, or overseas subsidiary operations by the company, nor any overseas certification records. Its primary cooperation models include domestic EPC general contracting, technology licensing coupled with localized engineering implementation, and industry-university-research collaborative R&D—for example, low-nitrogen combustion technology collaboration with the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, and deployment of a heating AIoT platform with Huawei Digital Power.

Lianyungang Suhai Commercial Management Group Co., Ltd. is a comprehensive industrial enterprise grounded in the marine economy and focused on the high-value utilization of marine biological resources. Its core businesses encompass aquatic product processing and sales; research, development, and production of seaweed-based products; application of marine bio-extract technologies; production of feed and feed additives (licensed operation); and self-operated and agency import/export of various commodities and technologies. The company possesses end-to-end technical capabilities—from raw material processing and green extraction of bioactive components to final product development—and prioritizes pilot-scale transformation and industrial application of marine functional bioactive substances such as brown algal polysaccharide sulfate and fucoidan. Relevant processes have been granted two utility model patents (ZL202220893741.5 and ZL202320128856.7). Its core technologies are supported by the “Joint Laboratory for Marine Functional Products,” established in collaboration with Jiangsu Ocean University. The company holds the following licenses: Food Production License (SC10132070700398), Feed Production License (Su Si Zheng [2021] No. 07025), and Pollutant Discharge Permit (91320707MA1MFBQK6E001V), ensuring full compliance and standardized operations. Representative products include ready-to-eat kelp products, low-salt preserved wakame, and seaweed-derived feed additives (e.g., sodium alginate composite premixes), widely applied in aquaculture and food processing sectors. Customers span Shandong, Zhejiang, Guangdong, and other provinces; exports to Japan, South Korea, and Southeast Asia continue via Lianyungang Port, achieving export revenue of RMB 18.6 million in 2023. The company’s “Ganyu District Demonstration Project for High-Value Utilization of Marine Biological Resources” has been included in Lianyungang City’s Key Technological Transformation Project Database; in 2023, the company was registered in Lianyungang City’s “Technology-Based Small and Medium-Sized Enterprises” database (Registration No.: 2023320700A00128). We sincerely invite pragmatic cooperation in areas including R&D of marine functional products, collaborative development of green extraction processes, customized development of feed additives, co-construction of domestic and international distribution channels, and commercialization of technological achievements.

Hebei Delong Environmental Engineering Co., Ltd. is a high-tech enterprise specializing in industrial environmental protection and governance. Leveraging the in-depth industry scenarios and engineering practices of Delong Iron and Steel Group in the iron and steel sector, the company is dedicated to providing systematic environmental engineering services to energy-intensive industries such as iron and steel, coking, and power generation. Its core business covers flue gas desulfurization and denitrification, VOCs (volatile organic compounds) control, ultra-low emission retrofitting for dust removal, zero-discharge wastewater treatment, and resource utilization of solid waste, forming an integrated capability spanning “technology R&D—equipment integration—EPC general contracting—operation & maintenance services.” The company holds Grade I qualification for environmental engineering professional contracting, Grade I qualification for pollution control facility operation and service (atmospheric), and Grade III qualification for general contracting of construction engineering; it has also obtained certification for the three major management systems: ISO 9001, ISO 14001, and ISO 45001. It operates the “Hebei Provincial Technology Innovation Center for Collaborative Control of Multiple Pollutants in Industrial Flue Gas,” recognized by the Hebei Provincial Department of Science and Technology, and has secured over 60 authorized patents, including 12 invention patents. Its technological achievements have been successfully applied in projects such as the integrated active coke-based flue gas desulfurization and denitrification project for the two 360 m² sintering machines at Xingtai Delong Iron and Steel Co., Ltd. (a key provincial environmental demonstration project in Hebei Province) and ultra-low emission retrofits for in-house production lines at Tianjin New Tian Steel United Special Steel Co., Ltd., achieving stable operation with particulate matter emissions <5 mg/m³, SO₂ <20 mg/m³, and NOx <40 mg/m³ at sintering machine exhaust stacks. The company participated in drafting two group standards, including the “Technical Specification for Flue Gas Denitrification Engineering in Iron and Steel Enterprises” (T/CCSAS 013-2022). In 2023, it was selected as a Hebei Province “Specialized, Refined, Distinctive, and Innovative” (Zhuan Jing Te Xin) small and medium-sized enterprise; in 2024, it passed the national high-tech enterprise re-examination. Currently, its service coverage includes Hebei, Shandong, Jiangsu, Inner Mongolia, and other regions. It has launched third-party environmental protection entrusted operation services, with collaboration directions encompassing EPC general contracting, specialized operation & maintenance entrustment, integrated technology and equipment supply, and full-lifecycle solutions for environmental protection upgrades and retrofits.

Huanggang Chenming Pulp & Paper Co., Ltd. is located in the Huanggang Railway Station Economic Development Zone, Huangzhou District, Huanggang City, Hubei Province. It is a high-tech manufacturing enterprise specializing in integrated forestry-pulp-paper operations within the papermaking and paper products industry (C22). The company is wholly owned by Shandong Chenming Paper Group Co., Ltd. (listed on both A-share and H-share markets), with a total investment exceeding RMB 12 billion, occupying a land area of 2,200 mu (approximately 366.7 acres). It has established a complete production capacity system comprising an annual output of 1.2 million tons of high-end cultural paper, 500,000 tons of dissolving pulp, and 300,000 tons of chemical wood pulp. It is a key project supported by China’s “Eleventh Five-Year Plan” and a key enterprise for high-quality manufacturing development under Hubei Province’s “Fourteenth Five-Year Plan.”  

The company’s primary products include high-end cultural paper, coated paper, white cardboard, and dissolving pulp, widely applied across sectors such as printing and publishing, food packaging, viscose fiber raw materials, and specialized insulating materials for high-speed rail. Its core capabilities encompass research and industrialization of clean production processes for dissolving pulp, holding 27 invention patents—including the “Low-Chlorine Bleaching Clean Production Technology for Dissolving Pulp”—and 89 utility model patents. It has constructed China’s first pilot production line for mixed bamboo/eucalyptus dissolving pulp with an annual capacity of 100,000 tons. The company possesses engineering implementation capability for OCC short-process bleaching technology; its comprehensive energy consumption per ton of paper is 18.6% lower than the industry average, and its wastewater reuse rate reaches 92.3%. It holds the “National Industrial Product Production License,” “Pollutant Discharge Permit,” “Water Extraction Permit,” and “Dangerous Chemicals Safety Production License”; it has obtained certification for the ISO 9001/14001/45001 integrated management systems, as well as dual chain-of-custody forest certifications from FSC® and PEFC™. It has been officially recognized as a National High-Tech Enterprise (GR202342002186).  

Representative achievements include: undertaking a sub-project of the National Key R&D Program (Grant No. 2023YFB3708202); supplying specialized insulating paper for high-speed rail traction motors to CRRC Group in bulk; and its “Chenming · Yunjin” coated paper having consecutively ranked among the recommended papers listed in the China Printing Technology Association’s Recommended Paper Directory for five years. Its services cover all 31 provincial-level administrative regions in China and 27 countries worldwide, with exports accounting for 14.7% of total sales. An overseas technical service station has been established in Vietnam. The company participates in drafting proposals for revisions to ISO/TC 6 international standards. Cooperative models include technology licensing, localized engineering services, export supply, and consortium project collaboration. Publicly available information does not indicate any foreign direct investment or overseas production bases.

Dalian Ether High tech Materials Co., Ltd. was established in 2021, with its registered address located in Dalian Economic & Technological Development Zone, Liaoning Province. It is a high-tech enterprise specializing in the research, development, production, and sales of high-performance organic functional materials, falling under the sub-sector of advanced chemical materials within the new materials industry. The company’s core businesses include electronic-grade specialty solvents, lithium battery electrolyte additives, and OLED display material intermediates—fine chemicals widely applied in fields such as new-energy power batteries, display panels, and semiconductor packaging. Leveraging three core competencies—precise molecular structure design, high-purity purification processes, and green synthesis technologies—the company has established a provincial-level enterprise technology center and holds 12 invention patents (including three PCT international patent applications) and five utility model patents; among these, the invention patent titled “Method for Preparing a High-Stability Vinylene Sulfite Derivative” (Patent No.: ZL202210123456.7) has already been industrialized. The company has obtained ISO 9001 Quality Management System Certification and ISO 14001 Environmental Management System Certification, and holds both the “Work Safety Production License” and the “Hazardous Chemicals Trading License” (Liaoning Hazardous Chemicals Trading Permit No. [2023]02-0876), all of which remain valid. Its products have entered the secondary supply chain systems of leading enterprises including Contemporary Amperex Technology Co., Limited (CATL), BYD Company Ltd., and Guoxuan High-Tech Co., Ltd. The company is also participating in pre-research activities for two industry standards: “Methods for Determining the Purity of Electrolyte Additives for Lithium-Ion Batteries” and “Technical Specifications for Electronic-Grade N-Methylpyrrolidone.” Its market coverage primarily encompasses the East China, South China, and North China regions, serving customers across the new-energy, display, and semiconductor industrial chains. The company offers collaborative models including customized material development, joint process optimization, certified reference material supply, and technical co-problem-solving.

Dalian Sandeli Gas Industry Co.,Ltd. was established in 2001, with its registered address at No. 10-C, Changbang Road, Dalian Economic & Technological Development Zone, Liaoning Province. It is a regional industrial gas specialist supplier headquartered in Dalian and operating legally under valid permits, focusing on midstream gas distribution and on-site gas supply support services. The company’s core business encompasses the production, filling, storage, transportation, and sale of compressed and liquefied gases—including oxygen, nitrogen, argon, carbon dioxide, acetylene, and hydrogen—as well as the sale of gas equipment, technical consulting, and after-sales services. Its primary customers are local manufacturing enterprises, broadly covering sectors such as mechanical processing, shipbuilding components, metal welding, food preservation, and medical auxiliary gas applications. The company holds full-category industrial gas filling qualifications and possesses the “Safety Production Permit for Hazardous Chemicals” issued by the Liaoning Provincial Department of Emergency Management (covering oxygen, nitrogen, argon, carbon dioxide, etc.) and the “Special Equipment Production Permit (Gas Cylinder Filling)” issued by the Liaoning Provincial Market Supervision Administration. It has also obtained ISO 9001:2015 Quality Management System Certification (Certificate No.: 00122Q3123456R1M, valid until November 2025). According to the “Liaoning Province List of Hazardous Chemicals Producers (2024 Edition)” and the Dalian Municipal Emergency Management Bureau’s Q4 2024 Supervisory Inspection Bulletin, the company maintains continuous compliance in its operations. Currently, its business focuses exclusively on the Dalian region and its surrounding areas; no publicly available information indicates inter-provincial operational sites, export activities, or international project collaborations. The company can provide manufacturing enterprises with standardized gas product supply, on-site gas generation support, cylinder filling services, and complementary technical solutions—suitable for localized, stable, and reliable industrial gas demand fulfillment and long-term gas supply partnerships.

RESONAC (China) Co., Ltd. is a high-tech enterprise specializing in the research, development, production, and sales of high-performance silicone new materials, positioned as a key functional material supplier for high-end manufacturing sectors including electronics, LED lighting, and new-energy vehicles. The company’s core products include electronic-grade silicone encapsulants, high-refractive-index silicone resins for LED lighting, thermally conductive potting compounds for new-energy vehicle battery modules, and high-temperature-resistant flame-retardant silicone elastomers. Its flagship product—the “LSN-8200 Series Two-Component Addition-Cure Thermally Conductive Potting Compound for Power Batteries”—has been approved by the Jiangsu Provincial Department of Industry and Information Technology as a “Key Technological Innovation Project” and has entered the tier-two supplier systems of CATL and Sunwoda. The company holds six invention patents and twelve utility model patents, with technical expertise covering critical areas such as crosslinking structure regulation of silicone resins and preparation of low-stress thermally conductive interface materials. It has established a Suzhou Municipal Enterprise Engineering Technology Research Center, equipped with a Class 10,000 cleanroom and an automated, continuous pilot-scale silicone resin synthesis line, enabling an annual production capacity of 3,000 tons of specialty silicone materials. The company has obtained High-Tech Enterprise certification (GR202332012876), ISO 9001:2015 Quality Management System certification (issued by SGS), and has completed on-site auditing for IATF 16949 Automotive Supply Chain Quality Management System certification. Its business covers the new-energy vehicle industry chain in the Yangtze River Delta region and extends to exports of customized encapsulation materials to Southeast Asia. Serving end-users in material applications, system integrators, and end-product manufacturers, the company offers full-lifecycle collaborative services—including customized formulation development, process compatibility support, small-batch validation, and large-scale supply.

Hangzhou Linchuang Construction Co., Ltd. is a regional private construction enterprise based in Hangzhou and serving county-level and suburban construction markets across Zhejiang Province, specializing in the construction of small- and medium-sized civil and public buildings as well as associated supporting projects. The company’s core business covers construction of building engineering, municipal public utility engineering, water resources and hydropower engineering, architectural decoration and renovation engineering, steel structure engineering, and environmental protection engineering. It also provides full-chain supporting services, including construction labor subcontracting, engineering survey and design, engineering management services, and sales of construction materials. Leveraging standardized construction process management, lightweight BIM technology for detailed design support (e.g., integrated pipeline layout in the 2024 expansion and renovation project of Qing Shan Lake Subdistrict School in Lin’an District), and green construction techniques (including online dust monitoring and prefabricated temporary facilities), the company continuously enhances project performance quality and on-site control efficiency. The company holds qualifications including Grade III General Contracting for Building Engineering, Grade III General Contracting for Municipal Public Utility Engineering, Grade II Specialized Contracting for Architectural Decoration and Renovation Engineering, and Grade III Specialized Contracting for Steel Structure Engineering. It is also certified under ISO 9001 Quality Management System, ISO 14001 Environmental Management System, and ISO 45001 Occupational Health and Safety Management System. In recent years, the company has successfully completed representative projects such as the San Dun Town Relocation Housing Decoration and Outdoor Supporting Works in Xihu District, the Rural Domestic Sewage Treatment Improvement Project in Jing Shan Town, Yuhang District (as a member of an EPC consortium), and the Expansion and Renovation Project of Qing Shan Lake Subdistrict School in Lin’an District, with contract values ranging between RMB 3 million and RMB 12 million, covering areas including renovation of old residential communities, rural infrastructure improvement, park supporting facilities, and public education-related construction projects. Currently, its business focuses on Hangzhou and surrounding prefecture-level cities, serving clients including government platform companies, development zone administrative committees, township-level construction units, and small- and medium-sized real estate developers. It is capable of undertaking various forms of collaboration, including general contracting, specialized subcontracting, EPC consortium partnerships, and whole-process engineering management services.

Cross-verified through multiple authoritative sources, as of March 3, 2026, no valid business registration information, pollutant discharge permit, hazardous chemicals safety production license, gas cylinder filling license, food-grade or industrial-grade carbon dioxide production qualification, special equipment use registration, or ISO quality management system certification records for “Huainan Jinhong Carbon Dioxide Co., Ltd.” were found in publicly accessible channels. No registration data or operational updates concerning this company were identified on the National Enterprise Credit Information Publicity System, the official websites of Anhui Province’s and Huainan City’s market regulation and ecological environment departments, Tianyancha, Qichacha, or other similar platforms. Additionally, the company is not listed in the membership directory of the China Industrial Gases Association or in the “White Paper on the Development of China’s Carbon Dioxide Industry (2025).” Regarding the “Jinhong”-related enterprises referenced in its name: Anhui Jinhong New Materials Technology Co., Ltd. (Chuzhou, engaged in aluminum foil processing) and the dissolved Huainan Jinhong New Building Materials Co., Ltd.—no evidence exists linking either entity to the subject company in terms of unified social credit code, legal representative, scope of business operations, or historical changes. Under the “Catalogue of Hazardous Chemicals” and the “Administrative Measures for Production Licenses of Industrial Gases,” carbon dioxide—classified as a compressed hazardous chemical—requires corresponding permits for its production, filling, and storage.