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Dalian Shengrui Technology Development Co., Ltd. is located in the Dalian High-Tech Industrial Development Zone, Liaoning Province. Established in 2003, it is a technology service enterprise specializing in industrial automation control system integration and intelligent equipment R&D. The company’s registered capital and paid-in capital are both RMB 10 million. Its registration status is “Active.” It holds the qualification of a National High-Tech Enterprise and ISO 9001:2015 Quality Management System Certification (Certificate No.: 00121Q31238R1M). It also holds a “Construction Enterprise Qualification Certificate” (Grade III General Contracting Qualification for Mechanical & Electrical Engineering Construction) and a “Work Safety Production License,” and has completed registration on the National Construction Market Supervision Public Service Platform.  

The company’s core business focuses on heavy industries such as metallurgy, electric power, and port machinery, providing deep technical support to process industry clients—including coal chemical, petrochemical, and environmental protection sectors—for automation upgrades. It delivers full-lifecycle technical services, including PLC programming and commissioning, DCS/SCADA system integration, industrial data acquisition, and remote monitoring platform development.  

Its core technologies cover in-depth industrial protocol analysis (supporting Modbus, Profibus, CANopen, and OPC UA), co-design of embedded edge controller hardware and software, and anti-interference signal acquisition architecture suitable for high-dust, strong electromagnetic interference environments. The company owns two invention patents, seven utility model patents, and fourteen software copyrights. It led the formulation of the “SR-SCADA System Engineering Implementation Specification” (Q/DLSR 001–2021), which has been filed with the Liaoning Provincial Market Supervision Administration. All projects strictly comply with national standards including GB 50171–2012 and GB/T 28827.3–2012, and have passed the German TÜV Rheinland SIL2-level functional safety assessment.  

Representative projects include:  
- In 2021, completion of the domestic substitution and retrofitting project for the PLC control system of ship unloaders at Phase III of Dalian Port Ore Terminal (contract value: RMB 8.6 million), achieving 100% independent controllability of critical control units;  
- In 2022, delivery of the DCS system upgrade project for the coke dry-quenching facility at Benxi Iron and Steel Group Corporation, covering 12 independent control stations; the system has operated continuously without failure for over 21,000 hours;  
- In 2023, undertaking the EPC project for the automated monitoring system of the bulk cargo terminal supporting the Padma Bridge in Bangladesh, awarded to China Communications Construction First Harbor Consultants Co., Ltd.; the system entered commercial operation in June 2024.  

Currently, its service network covers 12 provinces, including Liaoning, Hebei, Shandong, and Jiangsu. Its client base includes major state-owned enterprises such as China Baowu Steel Group, Anshan Iron and Steel Group, China Merchants Ports Holdings, and China Communications Construction Company. Leveraging a “technology + service” model, the company has expanded into South Asia and Southeast Asia—including Bangladesh and Vietnam—establishing localized technical support liaison points. However, it has not yet established overseas legal entities or obtained international product certifications such as EU CE or U.S. UL. Publicly available information does not indicate involvement in specialized chemical process packages, special equipment manufacturing licenses, or nationally funded scientific research projects.

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.

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.

Dalian Sanda Gas Purification Technology Co., Ltd., located in Yingchengzi Subdistrict, Ganjingzi District, Dalian City, Liaoning Province, is a national high-tech enterprise specializing in research and development of industrial gas purification and special gas purification technologies, equipment manufacturing, and system integration. The company operates within the specialized environmental protection equipment manufacturing sector (C3591) and the atmospheric pollution control equipment sub-sector, and has entered a mature industrialization development stage. Its core business covers: electronic specialty gas purification units; high-purity gas purification systems for semiconductor-grade nitrogen, hydrogen, argon, etc.; inert gas circulation purification equipment for cathode/anode material production in lithium-ion batteries; and integrated deep-removal solutions for hazardous components—including H₂S, NH₃, and VOCs—in exhaust gases from petrochemical and coal chemical industries. Key clients include SMIC, Yangtze Memory Technologies Co., Ltd. (YMTC), Contemporary Amperex Technology Co., Limited (CATL), and Wanhua Chemical Group Co., Ltd. Core technical capabilities encompass low-temperature catalytic oxidation, MOF adsorbent material modification, and online trace-impurity monitoring via mass spectrometry coupling. The company has established a patent portfolio comprising 12 invention patents and 37 utility model patents. Its “ppb-level dual-control purification technology for oxygen and moisture” has been tested and certified by the China Electronics Standardization Institute, achieving post-purification gas specifications of O₂ ≤ 50 ppt and H₂O ≤ 20 ppt, fully compliant with SEMI F57-0320 standards. The company possesses full-chain capabilities spanning process package development, engineering design, core equipment manufacturing, and EPC delivery. Its SDP-series electronic specialty gas purifiers have been included in the Ministry of Industry and Information Technology’s “Recommended Catalogue of National Industrial Energy-Saving Technologies and Equipment” and have received recognition as Liaoning Province’s “First-of-a-Kind Major Technical Equipment.” The company holds ISO 9001:2015 Quality Management System and ISO 14001:2015 Environmental Management System certifications, as well as a GC1-class “Special Equipment Production License” (for pressure piping component manufacturing), maintains provincial-level enterprise technology center accreditation, and has participated in the revision of two national standards, including GB/T 16942—2023. Representative projects include: delivery of eight 6N-grade electronic-grade ammonia purification systems (200 Nm³/h per unit) to the national integrated circuit materials platform, achieving import substitution; provision of a full-process sulfur-nitrogen co-removal unit for a large-scale coal-to-olefins project in Inner Mongolia, operating continuously for over 28,000 hours without failure; and, in 2025, undertaking the inert gas purification EPC project for VinFast’s lithium-ion battery manufacturing base in Vietnam, with a contract value exceeding RMB 42 million. Currently, the company serves clients across 23 provinces, municipalities, and autonomous regions nationwide, and maintains technical service cooperation points in Vietnam and Malaysia. Its primary international collaboration model involves technology licensing plus EPC engineering export; publicly available information does not indicate any overseas legal subsidiaries or trade-oriented export qualifications.

Dalian Runbang Paint Ltd.,Co. was established in 2003, with its registered address located in the Songmu Island Chemical Industry Park, Puwan New Area, Dalian City, Liaoning Province. It is a high-tech enterprise specializing in the research and development, production, and sales of industrial protective coatings. The company’s core business encompasses R&D and manufacturing of solvent-based industrial coatings—including alkyd-, epoxy-, and polyurethane-based coatings—as well as certain water-based industrial coatings. Its products are widely applied in critical sectors such as heavy-duty corrosion protection (e.g., epoxy zinc-rich primers, epoxy micaceous iron oxide intermediate coats, and polyurethane topcoats), shipbuilding and marine engineering, steel bridge structures, and internal/external walls of petrochemical storage tanks. The enterprise holds a Permit for Safe Production of Hazardous Chemicals (Liaoning WH Anxu Zheng Zi [2021] No. 020084), covering multiple categories of solvent-based industrial coatings, valid until March 2027. It has also obtained ISO 9001:2015 Quality Management System Certification (Certificate No.: 00122Q31234R1M) and complies with the GB/T 24001-2016 Environmental Management System requirements. Technologically, the company holds five utility model patents focused on structural optimization of spray-painting equipment and improvements to coating mixing devices, supporting enhanced process stability and production efficiency. Representative projects include supply of corrosion-protection coatings for the Dalian Bay Subsea Tunnel’s supporting steel structures and supply of non-nuclear-grade pipeline corrosion-protection coatings for Phase II expansion of the Liaoning Hongyanhe Nuclear Power Plant. The company has been selected for Liaoning Province’s 2023 “Specialized, Refined, Distinctive, and Innovative SME Incubation Database,” with its focus area being “Industrialization of High-Performance, Environmentally Friendly Heavy-Duty Corrosion-Protection Coatings.” Its service region centers on Northeast China and extends to the Bohai Rim industrial belt—including Shandong, Hebei, and Tianjin provinces/municipalities—though it currently has no publicly documented overseas entities or international project implementations. Serving EPC contractors, design institutes, end users, and coating distribution channels, the company offers customized corrosion-protection coating solutions, technical support services, and reliable bulk supply.

Dalian Quande Heavy Industry Equipment Co., Ltd. is a medium- and small-sized specialized equipment manufacturing enterprise registered in Lüshunkou District, Dalian City, Liaoning Province. The company specializes in the design, manufacturing, installation, and sales of mechanical equipment and components, metal structural components, and marine auxiliary equipment; it also provides electromechanical equipment installation engineering services as well as import and export services for goods and technologies. Its industry classification falls under the specialized equipment manufacturing sector (C35), specifically within the subcategories of marine engineering specialized equipment manufacturing and metallurgical specialized equipment manufacturing. The company possesses customized processing and supporting service capabilities, covering the full production and delivery process for general-purpose mechanical equipment and metal structural components. It maintains a consistent record of contract fulfillment in non-core equipment maintenance, repair, and spare parts supply for steel mills and port enterprises in Northeast China, with contract values typically below RMB 1 million; its clients include regional industrial users. The company’s registered capital and paid-in capital both amount to approximately RMB 20 million, and it is wholly controlled by natural persons, with no state-owned capital or shareholding by listed companies. It is currently operating stably and has successfully passed the Dalian Municipal Market Supervision Administration’s 2024 “dual random, one open” compliance inspection. Although the company does not hold high-level industry certifications—such as Pressure Vessel Manufacturing Licenses (Classes A1/A2), ASME U/U2 Certification, or DNV-GL or LR marine product type approvals—and is not listed in national programs such as “Specialized, Refined, Distinctive, and Innovative” (Zhuan Jing Te Xin) enterprises or High-Tech Enterprises, it leverages its local manufacturing foundation to deliver pragmatic and reliable support services within the general heavy-industry equipment supply chain. Potential collaboration focuses on mid-to-low-complexity, high-responsiveness requirements—including equipment maintenance and repair, custom structural component fabrication, electromechanical installation, and spare parts supply—across industries such as metallurgy, ports, and shipbuilding; such cooperation is suitable for regional project coordination, supply-chain integration, and technology-adaptation partnerships.

Shuifa Energas Gas Co.,Ltd. (Stock Abbreviation: Pesy Co., Stock Code: 603318), established in 2002 and headquartered in Dalian City, Liaoning Province, is a high-tech enterprise specializing in the research and development, manufacturing, and system integration of natural gas transmission and distribution equipment. The company was listed on the main board of the Shanghai Stock Exchange in 2015 and is currently a state-owned listed company controlled by the State-owned Assets Supervision and Administration Commission of Liaoning Province. Its core businesses cover gas pressure regulation and metering equipment, LNG vaporization and storage/transportation equipment, intelligent gas control systems, and gas engineering technical services. Its products and solutions are widely applied in urban gas distribution, long-distance transmission pipelines, LNG receiving terminals, industrial gas supply, and distributed energy sectors. Leveraging its designation as a national-level “Little Giant” enterprise specializing in niche, refined, distinctive, and innovative technologies, the company has established the Liaoning Provincial Gas Equipment Engineering Technology Research Center and a provincial-level enterprise technology center. As of the end of 2023, it held 127 valid patents (including 28 invention patents) and led or participated in the formulation of over ten national and industry standards, including “Urban Gas Pressure Regulators” (CJ/T 185–2012) and “Liquefied Natural Gas (LNG) Vaporization Equipment” (NB/T 47007–2018). The company possesses design and manufacturing licenses for Class A2 pressure vessels, and design and installation licenses for Class GB1 and GC2 pressure piping. It has also obtained ISO 9001/14001/45001 management system certifications, API Q1 quality system certification, and CE certification under the European Union’s Pressure Equipment Directive (PED). Representative projects include the pressure regulation and metering system for Sinopec Tianjin LNG Terminal, the pressure regulation station for the Fujian-Guangdong Branch Line of the National Pipeline Network’s West-to-East Gas Transmission Phase III Project, core equipment supply for the Shenzhen Dapeng Bay LNG Emergency Peak-Shaving Station, and smart gas platform construction for multiple provincial urban gas groups. Its business covers all 30 provinces (autonomous regions and municipalities directly under the Central Government) across China; some of its LNG skid-mounted equipment has been exported to Southeast Asia and the Middle East. The company provides equipment supply, system integration, EPC engineering services, and customized cooperation for the “E-Gas” intelligent gas cloud platform to energy enterprises, urban gas companies, engineering EPC contractors, and government platforms.

Dalian Jiacheng Resourse Engineering & Equipment co.,Ltd, located in the Dalian High-Tech Industrial Development Zone, Liaoning Province, is a national high-tech enterprise specializing in research and development, manufacturing, and integrated services for critical equipment in gas transmission and distribution systems. It operates within the specialized equipment manufacturing industry (C3443) and is in a mature development stage. The company’s registered capital and paid-in capital both amount to RMB 120 million, and its number of employees covered by social insurance remains stable at approximately 280.  

The company’s core businesses include complete high-pressure/ultra-high-pressure gas pressure regulation stations, intelligent gas metering systems, LNG vaporization skid-mounted units, gas SCADA remote monitoring systems, and full-lifecycle technical services for gas facilities. Its products and services are widely applied in projects such as branch lines of the West-to-East Gas Transmission Project, supporting infrastructure for the China–Russia East-Route Natural Gas Pipeline, and urban gas network upgrading initiatives in the Beijing–Tianjin–Hebei and Yangtze River Delta metropolitan regions. Key clients include China National Petroleum Corporation Pipe Network Group, subsidiaries of China National Petroleum Corporation, and municipal gas companies—operators of energy infrastructure.  

The company possesses capabilities in complete equipment manufacturing and edge-intelligent system integration, holding 27 valid invention patents, 89 utility model patents, and 15 software copyrights. Its core technologies include: a high-precision dynamic pressure self-adaptive regulation algorithm; low-temperature stainless-steel valve body anti-brittle fracture structural design; and a gas industrial control information security protection module compliant with IEC 62443 standards. Its PSR-series intelligent pressure regulation devices have passed the scientific and technological achievement evaluation conducted by the Ministry of Housing and Urban-Rural Development and been included in the “Catalogue of New Technologies Promoted in the Urban Gas Industry (2024 Edition).” The GasEdge® edge-computing gateway has been deployed at over 4,200 gas facilities nationwide.  

In terms of certifications, the company holds a Special Equipment Production License (GB1 and GB2 classes), an Explosion-Proof Electrical Equipment Production License (Ex d IIB T4 Gb), and an AAA-class “Gas Equipment (Pressure Regulator) Service Capability Rating Certificate.” It is also certified under ISO 9001, ISO 14001, and ISO 45001.  

Notable project achievements include: delivery from 2022 to 2024 of 132 sets of PSR-6000 pressure regulation devices for the domestic substitution initiative of intelligent pressure regulation stations on the Shaanxi–Beijing Line IV, achieving a failure rate below 0.17%; provision of specialized pressure regulation skids rated for operation at −35°C for the Zhangjiakou competition zone of the Beijing Winter Olympics; and winning, in 2025, the EPC contract for Phase II supporting pressure regulation facilities along the Kazakhstan section of the Central Asia Gas Pipeline D-Line, with a contract value of RMB 187 million.  

The company has established localized technical service stations in Kazakhstan, Uzbekistan, and Mongolia, possesses adaptation capabilities for international standards including GOST-K, and supports EPC general contracting, technology licensing plus engineering implementation, and consortium collaboration models. Publicly available materials do not indicate publication of a dedicated ESG report or establishment of overseas production bases.

Dalian Nanyang Anti-corrosion Chemical Coating Co., Ltd. was established in 1993, with its registered address at Shuangtaigou Village, Yingchengzi Subdistrict, Ganjingzi District, Dalian City, Liaoning Province. It is a domestically funded manufacturing enterprise specializing in the research and development, production, and application services of industrial anti-corrosion coatings for over thirty years. The company’s registered capital is RMB 5 million. It remains in continuous operation, having submitted its 2025 annual report on schedule, with no record of operational anomalies or serious violations of laws and regulations resulting in credit impairment. Its core business focuses on solvent-based heavy-duty anti-corrosion coating systems, including epoxy zinc-rich primers, epoxy micaceous iron oxide intermediate coats, polyurethane topcoats, and chlorinated rubber anti-corrosion paints. For many years, it has provided products and technical services to meet corrosion protection requirements across sectors such as petrochemicals, power generation, ports, bridges, and municipal infrastructure. Typical clients include PetroChina Liaoyang Petrochemical Branch, Dalian Port Group, Huaneng Dalian Power Plant, and certain subsidiaries of Anshan Iron and Steel Group. Its core capability lies in customized anti-corrosion coating solutions based on refined mature formulations and process adaptations, covering the entire technical service process—from product selection and construction guidance to on-site technical support. The company holds a hazardous chemicals coating production license (XK13-008-00078) and ISO 9001:2015 Quality Management System Certification (Certificate No.: 00822Q30258R2M, valid until December 17, 2025). Publicly available information does not indicate that it holds ISO 14001 or ISO 45001 certifications, nor does it disclose any invention patents, utility model patents, or participation in drafting national or industry standards. Leveraging its long-standing project execution track record within the Bohai Rim Economic Zone—particularly in Liaoning, Jilin, and Heilongjiang provinces—the company has established stable regional service capabilities. Deliverables encompass anti-corrosion coating supply, complementary construction technical support, and collaborative project acceptance assistance. Project types primarily include anti-corrosion for medium-to-large-scale petrochemical facilities, long-term protection of port steel structures, and corrosion-resistant coatings for flue gas systems in thermal power plants. Public sources show no evidence of export operations or acquisition of foreign market access certifications such as EU CE, U.S. FDA/NSF, or Middle Eastern SASO; nor do they indicate any overseas project implementation records. Its cooperation model centers on direct product supply plus localized technical services, supporting batch deliveries aligned with engineering milestones, technical briefings, and on-site support throughout construction—suitable for domestic chemical engineering projects involving new construction, expansion/upgrading, or inspection/maintenance. (Word count: 518)

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.