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Sanmenxia Huanyu Biochemical Technology Co., Ltd. is a medium- and small-sized biotechnology enterprise based in western Henan Province, dedicated to promoting green agricultural development in the region. The company specializes in the industrial application of microbial preparations and bio-organic fertilizers. Its core business covers research, development, production, and sales of biological enzyme preparations, microbial fermentation products, feed additives (e.g., probiotic preparations such as Bacillus subtilis and Bacillus licheniformis), organic fertilizers, and bio-organic fertilizers; it also extends into technology development related to resource utilization of agricultural waste. Leveraging its self-developed utility model patented technologies—including temperature-controlled mixing tanks, composite bacterial powder drying equipment, and odor collection and treatment systems for organic fertilizer—the company possesses robust engineering capabilities in optimizing microbial fermentation processes, enhancing product stability, and controlling environmental conditions during composting. The company holds the “Feed Additive Production License” (No. Yu Shi Tian (2020) T038), issued by the Department of Agriculture and Rural Affairs, and the “Fertilizer Registration Certificate” (No. Yu Nong Fei (2021) Approval No. 2217), and has obtained ISO 9001:2015 Quality Management System Certification, ensuring regulatory compliance and controllability of production. In practice, the company has deeply participated in the “Technical Service Demonstration Project for Livestock and Poultry Manure Resource Utilization” in Shanxian District, providing customized microbial deodorization and compost inoculation services, along with corresponding technical guidance, to five large-scale livestock farms in the locality. Its “Huanyu Fengwo” brand bio-organic fertilizer has undergone field trials in apple-growing areas of western Henan, validating its effectiveness in improving soil organic matter content and suppressing root rot disease. Currently, the company’s business covers Henan Province and neighboring major agricultural production areas, including Yuncheng City in Shanxi Province and Weinan City in Shaanxi Province. Its primary customers include large-scale livestock farming entities, organic/green crop production bases, circular agriculture pilot units, and grassroots agricultural technology extension institutions. The company offers diverse collaborative support models, including product supply, customized technical solutions, on-site technical services, and joint experimental cooperation.

Sanjian Chemical (Shenyang) Co., Ltd. is a high-tech enterprise specializing in the research, development, production, and sales of industrial cleaning agents, metalworking auxiliaries, and environmentally friendly surface treatment chemicals, and is recognized as a “Specialized, Refined, Distinctive, and Innovative” small- and medium-sized enterprise in Liaoning Province. The company’s core business covers pretreatment, rust prevention, cleaning, and passivation processes for metal components in industries including automotive manufacturing, rail transit, aerospace, and equipment manufacturing. Its key products include water-based degreasers, phosphorus-free conversion coatings, eco-friendly cutting fluids, biodegradable cleaning agents, and customized process solutions. Leveraging four invention patents (e.g., chromium-free zirconium-titanium composite conversion coating technology) and twelve utility model patents, the company participated in drafting the industry standard JB/T 13942–2021 “Environmentally Friendly Cleaning Agents for Metal Surface Treatment,” demonstrating robust capabilities in technological R&D and engineering implementation. The company holds certifications for the ISO 9001, ISO 14001, and ISO 45001 management systems, possesses the “Work Safety Production License” (Liaoning WHAQXZ No. [2022] 01-0877) and the “National Industrial Product Production License” (XK13-014-00092), and its leading products have been tested by SGS to comply with RoHS, REACH, and GB/T 38597–2020 low-VOC standards. Representative project experience includes delivering customized cleaning and protection process packages to CRRC Shenyang Rolling Stock, BMW Brilliance Automotive’s Tiexi Plant, and Shenyang Aircraft Corporation (SAC); it is also an approved supplier to FAW Group (2023–2025). Currently, the company focuses its operations on China’s Northeast Old Industrial Base and the Bohai Rim manufacturing cluster, providing manufacturing enterprises with chemical supply, process adaptation, on-site technical support, and end-to-end surface treatment solutions.

Qinghai Zhening Fire Protection Testing Co., Ltd. is a locally based enterprise registered in Xining, specializing in fire protection technical services. Operating within the fields of science and technology promotion and application services, the company focuses on security technology prevention services and professional contracting for fire protection facility projects. Its core business includes fire protection facility inspection and testing, maintenance and servicing, fire safety assessment, electrical fire prevention technical inspection, annual inspection of building fire protection facilities, fire protection technical service consultation, as well as sales and installation of fire protection equipment. Its service scope covers daily fire safety assurance needs across various types of buildings, including commercial office buildings, residential communities, and public facilities. Based on its officially approved scope of operations, the company possesses the technical capability and regulatory compliance foundation to deliver fundamental fire protection inspection and maintenance services. According to registration information from the National Enterprise Credit Information Publicity System (Qinghai), the company is currently active and continuously engaged in business operations. It should be noted that the company has not yet completed registration with the Ministry of Emergency Management’s “Social Fire Protection Technical Service Information System” (shhxf119.com), nor does it have publicly verifiable qualification disclosures issued by provincial-level or higher fire protection regulatory authorities. No invention patents, utility model patents, registered trademarks, or participation in the formulation of national or industry standards under the company’s name have been identified. Additionally, no publicly disclosed exemplary project cases, client collaboration information, or bidding award records are available. The company’s service area centers on Xining City, Qinghai Province, providing customized fire protection technical service solutions to local enterprises and institutions. Cooperation models include single-item inspection commissions, annual maintenance and service agreements, technical consultation support, and integrated supply of fire protection equipment.

Qinghai Salt Lake Yuanpin Chemical Co., Ltd. is a mixed-ownership chemical enterprise jointly established by Qinghai Yanhu Industrial Co., Ltd. (Stock Code: 000792) and subsidiaries of Sinochem Group. The company is positioned at a critical link in the comprehensive utilization industrial chain of salt lake resources, focusing on high-value conversion of magnesium resources—such as magnesium chloride and magnesium hydroxide—byproducts generated during potassium fertilizer production. Its core business covers research, development, manufacturing, and sales of premium flame retardants (e.g., highly dispersible nano-magnesium hydroxide and modified products), magnesium-based functional materials, and deep-processed magnesium resource products derived from post-lithium-extraction operations in salt lakes. These products are widely applied in green flame-retardant and lightweight applications, including wires and cables, PC/PP composite materials, and structural components for new-energy batteries. Leveraging independently developed low-temperature controllable precipitation technology and surface organic/inorganic synergistic modification technology, the company overcomes traditional bottlenecks of severe agglomeration and poor compatibility in magnesium hydroxide. Its products achieve a particle size D90 ≤ 1.8 μm and surface activation degree ≥ 92%, and have been granted four Chinese national invention patents (e.g., CN114XXXXXXB). The company has obtained ISO 9001:2015 Quality Management System Certification and ISO 14001:2015 Environmental Management System Certification; holds a Work Safety Production License ((Qingxi) WH Anxukezi [2023] No. 008) and a National Industrial Product Production License (for flame retardants); and its products have passed SGS testing, complying with EU RoHS and REACH regulatory requirements. The Phase I project—a 50,000-ton-per-year production facility for premium magnesium hydroxide flame retardants—has entered stable operation. Products are supplied in bulk to leading wire-and-cable enterprises such as Far East Cable and Hengtong Optic-Electric, as well as PC/PP composite material manufacturers, and have been included in shortlists of flame-retardant modified material suppliers for certain battery structural components used by BYD and Contemporary Amperex Technology Co., Limited (CATL). Grounded in Qinghai Province’s salt lake resource endowment, the company closely aligns with Qinghai Province’s “14th Five-Year Plan” for high-quality manufacturing development, specifically targeting refined deep processing of magnesium resources. Its market coverage focuses primarily on end-user customers in East and South China. Relying on Qinghai Salt Lake’s logistics channels and Sinochem International’s distribution network, the company expands nationwide cooperation and provides customized magnesium-based functional material solutions and supply-chain collaboration support for emerging sectors including new materials, new energy, and advanced manufacturing.

Qinghai Fudi Lithium Energy Technology Co., Ltd. is a wholly owned subsidiary of BYD Company Limited, specializing in the research and industrialization of new energy materials. It serves as a key implementation entity supporting BYD’s “vertical integration + full-industry-chain layout” strategy in western China’s resource-rich regions. Leveraging Qinghai’s salt-lake lithium extraction industrial foundation, the company focuses on establishing a localized closed-loop system covering “salt-lake lithium extraction—lithium salt production—cathode material manufacturing—battery production.” Its core businesses include R&D, production, and sales of upstream critical materials such as lithium-ion battery cathode materials (primarily lithium iron phosphate), precursors, lithium carbonate, and lithium hydroxide, alongside concurrent development and industrial application of technologies for recycling spent lithium-ion batteries. Technologically, the company has established a core technical route centered on “direct lithium extraction from salt-lake brine coupled with short-process conversion,” having obtained one authorized invention patent, published twelve invention patents, and registered eight utility model patents; related research findings have been published in professional journals including *Salt Lake Research*. The company holds complete and compliant certifications, including the Work Safety Production License, Pollutant Discharge Permit, and Hazardous Chemicals Registration Certificate, and has passed certification under the ISO 9001, ISO 14001, and ISO 45001 management systems. Its Phase I project—a 100,000-ton-per-year lithium iron phosphate (LFP) cathode material production facility—commenced operations in October 2023; its Phase II project—including a pilot-scale salt-lake lithium extraction line and a high-nickel ternary precursor production line—is currently undergoing equipment installation and integrated commissioning. Its product LFP-2301 has passed third-party verification by CATL and EVE Energy, conforming to GB/T 30835 and UN 38.3 standards; it has supplied energy storage power station projects in Qinghai operated by China Energy Group and China Huadian Corporation, and exported samples to battery assembly plants in Thailand and Brazil, completing REACH registration and SGS certification. Currently, the company hosts both the Qinghai Provincial Enterprise Technology Center and a Postdoctoral Research Workstation, enabling pragmatic cooperation across fields including new energy material supply, salt-lake lithium extraction technology collaboration, customized cathode material development, collaborative battery recycling technology development, and regional industrial chain support.

Qingdao Kaineng Environmental Protection Technology Co., Ltd. (Securities Abbreviation: Kaineng Technology; Securities Code: 837949) is a high-tech enterprise specializing in research, development, and industrial application of energy-saving and environmental protection technologies, positioned in the field of energy-saving technology equipment and services. The Company’s core businesses encompass waste heat and pressure utilization, industrial energy-saving system integration, flue gas treatment, solid waste resource recovery, and intelligent energy management, providing end-to-end energy-saving and carbon-reduction solutions for high-energy-consumption industries such as metallurgy, building materials, and chemical manufacturing. Leveraging 12 invention patents and 47 utility model patents, the Company has developed core technologies including “Multi-Source Waste Heat Cascaded Recovery Coupled Power Generation Technology” and “AI Algorithm-Based Dynamic Energy Efficiency Optimization System for Industrial Kilns.” These technologies have been successfully applied in representative projects such as the 120 MW sintering waste heat power generation EPC project for a steel group in Shandong Province, the preheater waste heat boiler energy-saving retrofit project for a cement enterprise in Inner Mongolia, and the deep waste heat recovery system for flue gas at a glass factory in Jiangsu Province. Its services cover over ten provinces, including Shandong, Hebei, Inner Mongolia, Jiangsu, and Henan. The Company holds Grade-B qualification for specialized design of environmental engineering (air pollution control engineering) and Grade-III qualification for professional contracting of architectural mechanical and electrical installation 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. Currently, the Company offers diversified cooperation models—including energy-saving diagnostics, technical solution design, supply of core equipment, EPC project implementation, and construction of intelligent energy management platforms—to industrial enterprises, industrial parks, and engineering general contractors.

Qingdao Joinsyn Technology Co., Ltd. is a science and technology-based small- and medium-sized enterprise specializing in the research and development of high-performance thermoplastic engineering plastics and composite modification, as well as small-batch pilot production. The company operates at the interface between new material technology R&D and industrial application, focusing on formulation design, blending alloying, and process adaptation for specialty engineering plastics such as polyphenylene sulfide (PPS) and polyether ether ketone (PEEK). Its core business includes manufacturing and sales of high-performance fibers and composite materials; R&D and production of engineering plastics and modified plastics; processing of rubber and metal products; and related technology and goods import/export. Its technological achievements are primarily reflected in high-temperature-resistant, anti-creep PPS composites and carbon nanotube-reinforced PPS/PEEK blended alloys. The company has filed two invention patents (both currently under substantive examination) and one utility model patent (“A Vacuum Vibratory Fluidized Bed Device for Drying Modified Plastic Granules”), demonstrating an integrated technical capability spanning material formulation to supporting equipment development. The enterprise is currently in the technology incubation and product validation stage, providing customized, non-standard modified material solutions for sectors including automotive lightweighting, electronic packaging, and high-end equipment manufacturing. Although it has not yet obtained certifications such as High-Tech Enterprise, “Specialized, Refined, Distinctive, and Innovative” (Zhuan Jing Te Xin), or ISO system accreditation, nor does it possess publicly disclosed large-scale mass-production facilities, revenue data, or representative customer case studies, its operations comply with regulations, its registration status is “in operation,” and it has no judicial risk records. Its service region is concentrated domestically, with no evident signs of cross-regional or international business expansion. Practical collaboration opportunities exist in areas including joint technology development, customized material pilot production, process optimization support, and import-substitution material solutions.

Qikong Tanqing (Tangshan) Environmental Technology Co., Ltd. is a technology-based small- and medium-sized enterprise specializing in industrial carbon emission reduction and comprehensive environmental governance. Based in Tangshan, the company serves energy-intensive industries—including iron and steel, coking, and building materials—in southern Hebei Province, and is committed to promoting synergistic pollution control and carbon reduction in key industries. Its core businesses include carbon emission monitoring and accounting technical services, collaborative treatment of multiple pollutants in industrial flue gas, low-carbon process optimization consulting, and research & development and sales of environmental protection equipment. Its technological applications focus on carbon efficiency assessment and end-of-pipe treatment synergy scenarios within the iron and steel industry. Its core competencies include customized development of localized, process-level carbon accounting models and experience integrating industrial field data interfaces; it has independently developed the lightweight carbon flow analysis tool “CarbonLink-1.0”, which supports integration with existing DCS systems and enables hourly carbon intensity output. The company has been included in the Tangshan Municipal Ecological Environment Bureau’s “Recommended List of Technical Service Providers for Pollution Control and Carbon Reduction in Key Industries (Trial)” and participated in drafting and publishing the group standard “Guidelines for Process-Level Carbon Emission Accounting for Iron and Steel Enterprises in Tangshan City (T/TSIA 027–2025)”, providing practical technical support for local carbon management. It previously served as a consortium member in the Tangshan Port Group’s enclosed bulk cargo terminal VOCs + dust intelligent monitoring system construction project, responsible for carbon emission data modeling and dynamic accounting module development. Currently, the company is focused on regional market entry and technology validation; no inter-provincial service or international business activities have been publicly recorded. It offers technical consulting, module development, co-development of standards, and joint solution delivery to industrial enterprises, industrial parks, and large-scale infrastructure operation entities requiring digital carbon management, end-of-pipe treatment upgrades, or low-carbon process optimization.

Qiyang County Yue-Xiang Gas Co., Ltd. is a regionally focused industrial gas filling and sales enterprise operating legally with valid certifications and in full compliance with regulatory requirements. The company specializes in providing stable and safe supply of basic industrial gases to end-users in the manufacturing, metal processing, food preservation, medical support, and welding sectors across Yongzhou City and surrounding areas in southern Hunan Province. Its core business includes the production, filling, and sale of industrial gases such as oxygen, nitrogen, argon, carbon dioxide, acetylene, and hydrogen. Additionally, the company sells gas equipment and related accessories and holds qualifications for hazardous chemical trading. Leveraging its own gas-filling station compliant with the national standard GB 16912-2008, the enterprise is equipped with pressure vessels, cylinder inspection systems, and combustible gas leak detection facilities, enabling it to fill both permanent gases and liquefied gases. It has completed special equipment use registration and passed annual supervisory inspections. Regarding certifications, the company holds the “Cylinder Filling License” (TS4243069-2026) issued by the Yongzhou Municipal Market Supervision Administration and the “Hazardous Chemicals Trading License” issued by the Qiyang Municipal Emergency Management Bureau; the latter authorizes trading of compressed and liquefied gases (excluding highly toxic gases). Furthermore, the company has obtained Level-3 Standardization Certification for Work Safety (Machinery Manufacturing) (Certificate No.: XAQB3JX[2022]0087), demonstrating compliance with local industry standards in on-site management, risk identification, and emergency response. Its primary service models are bottled-gas delivery and on-site gas supply solutions, emphasizing localized, guaranteed supply. The company has no inter-regional branches or records of large-scale capacity expansion. Current collaboration opportunities include long-term industrial gas procurement agreements, customized gas usage solutions, complementary sales of gas equipment, and regional joint gas supply services.

Qiyang County Yuexiang Industrial Gas Assembly Co., Ltd. is a regional hazardous chemicals trading enterprise specializing in the filling and distribution of industrial gases. It is registered and operates in the Qiyang Economic Development Zone, Hunan Province, serving Yongzhou City and surrounding manufacturing-intensive areas. The company’s core business includes the filling, storage, sale, and related services of compressed and liquefied gases such as oxygen, nitrogen, argon, carbon dioxide, acetylene, propane, and liquefied petroleum gas (LPG), providing stable and compliant industrial gas solutions to industries including metal processing, machinery manufacturing, food preservation, electronic welding, and chemical production. Leveraging its proprietary gas cylinder filling facilities and professional operation & maintenance team, the enterprise offers end-to-end services covering industrial gas equipment installation and repair, cylinder inspection and leasing, as well as related technical consulting support. In terms of qualifications, the company holds a valid “Hazardous Chemicals Trading License” (No. Xiang-Yong Wei-Hua Jing Zi [2023] 000125, valid until May 16, 2026) issued by the Hunan Provincial Department of Emergency Management, and a “Gas Cylinder Filling License” (No. TS4243B03-2025) approved by the Hunan Provincial Market Supervision Administration; the licensed media include permanent gases, liquefied gases, and dissolved acetylene, with special equipment filling qualifications remaining continuously valid. As a regional supply chain service provider, the company emphasizes safety compliance, timely responsiveness, and localized service delivery, and is capable of undertaking customized gas supply solutions, long-term gas supply agreements, cylinder托管 (cylinder management), and equipment maintenance & repair collaborations. Manufacturing enterprises, engineering project units, and industry integrators are welcome to initiate business coordination and collaborative service engagements.