Dalian Ruixue Refrigeration Equipment Co., Ltd. is a high-tech enterprise specializing in the research and development, manufacturing, and system integration of industrial refrigeration equipment, falling under the specialized equipment manufacturing industry—specifically, the refrigeration and air-conditioning equipment manufacturing sector. The company’s core business encompasses complete sets of equipment and key components, including screw-type refrigeration compressor units, low-temperature cascade units, CO₂ subcritical/transcritical refrigeration systems, food quick-freezing tunnels, and pharmaceutical cold-chain temperature-control modules. Its products are widely applied in scenarios demanding stringent temperature control accuracy, energy efficiency, and safety, such as food processing, biopharmaceuticals, cold-chain logistics, and chemical process cooling. The company possesses expertise in optimizing system energy efficiency and implementing safety redundancy design under low-temperature operating conditions. It holds 12 valid utility model patents—including “A Two-Stage Screw Compressor Energy Regulation Device” and “An Intelligent Control System for Multi-Temperature-Zone Cold Storage”—as well as 3 software copyrights. In terms of certifications, the company holds the TS Special Equipment Production License (covering A2-level pressure vessel design and manufacturing), ISO 9001:2015 Quality Management System Certification, and GB/T 23331-2020 Energy Management System Conformity Certification. In recent years, the company has successfully implemented representative projects, including a –35°C deep-freezing production line for a major meat-processing group in Heilongjiang Province; a –25°C constant-temperature and constant-humidity unit for a vaccine storage center in Shandong Province; and an ammonia-to-CO₂ green refrigeration retrofit project at a dairy plant in Inner Mongolia. Its clientele includes well-known enterprises such as Shuanghui, Jinluo, and China Resources Pharmaceutical Logistics. Geographically, its business operations primarily cover Northeast, North, and East China; it currently has no overseas physical presence or export records. Targeting industrial refrigeration system integrators, end users, and EPC engineering firms, the company offers collaborative models including customized equipment supply, technical solution support, energy-saving retrofits, and full-lifecycle operation and maintenance cooperation.

Xiangyang Wuerwu Pump Industry Co., Ltd. is a national high-tech enterprise affiliated with China North Industries Group Corporation Limited (NORINCO Group), developed based on the military-industrial technological foundation of the former No. 525 Research Institute. The company specializes in research and development, manufacturing, and full-lifecycle technical services for specialized industrial pumps. It has long focused on extreme operating conditions—including high pressure, high temperature, strong corrosion, and high solid content—and its main product lines include multistage centrifugal pumps, slurry pumps, screw centrifugal pumps, and high-temperature/high-pressure boiler feedwater pumps. These specialized pumps are widely applied across industries such as petrochemicals, coal chemical processing, power generation, environmental protection, and defense-related supporting sectors. Leveraging independently controllable core technologies, the company has established patent barriers in areas including hydraulic model optimization, casting of corrosion-resistant duplex stainless steel impellers, and axial force balancing structures, holding 12 valid invention patents and 47 utility model patents. It has also led or participated in drafting the industry standard “JB/T 14392–2023 Technical Specifications for High-Temperature/High-Pressure Boiler Feedwater Pumps for Coal Chemical Industry.” In terms of certifications, the company has obtained ISO 9001, ISO 14001, and ISO 45001 management system certifications; holds a “Special Equipment Production License” (Grade B pumps); and certain products comply with API RP 610, 12th Edition. Its YD-series high-efficiency, energy-saving multistage pumps have been included in the “Recommended Catalogue of National Industrial Energy-Saving Technologies and Equipment (2024 Edition).” Representative projects include Sinopec’s Ordos Coal-to-Oil Project, customized erosion-resistant slurry pumps for lanthanum-carbon enterprises in Yulin, Shaanxi, and corrosion-resistant, clog-free pump supply for municipal sludge drying projects along the Yangtze River Basin. Currently, the company primarily serves key energy and chemical industry regions in East China, North China, and Northwest China, offering cooperation models encompassing equipment supply, technology development, customized design, specialized equipment repair, and system integration services.

Chongqing Jian Feng Chemical Hodings Co.,Ltd (stock abbreviation: Jianfeng Chemical; stock code: 000950.SZ) is a national high-tech enterprise, a national-level green factory, and a “Little Giant” enterprise specializing in niche sectors with distinctive expertise, as designated by the Ministry of Industry and Information Technology (MIIT). The company operates under Chongqing Chemical & Pharmaceutical Holding (Group) Company, with the Chongqing Municipal State-owned Assets Supervision and Administration Commission as its ultimate controlling shareholder. It focuses on fine chemical products and novel fertilizers. Its core businesses encompass research, development, production, and sales of melamine, ammonium nitrate, nitric acid, compound fertilizer, water-soluble fertilizer, and slow- or controlled-release fertilizer. Its melamine production capacity ranks among the top domestically, and its products are widely applied in areas such as engineered wood panels, coatings, plastics, adhesives, and modern agricultural cultivation. Relying on its National-Certified Enterprise Technology Center, the Chongqing Nitric Acid and Nitrogen Fertilizer Engineering Technology Research Center, and a postdoctoral research workstation, the company has accumulated 87 valid patents (including 32 invention patents) and has led or participated in the formulation and revision of 11 national and industry standards, including *Industrial Melamine* (GB/T 23951—2022) and *Ammonium Nitrate* (GB/T 2945—2018). The company has obtained certifications for the three major management systems—ISO 9001, ISO 14001, and ISO 45001—and holds the National Industrial Product Production License for fertilizers and hazardous chemicals, the Grade-II Standardized Safety Production Enterprise Certificate, and the MIIT’s *Civil Explosives Safety Production License* (specifically for ammonium nitrate). Its technological achievements include the “Clean Production Technology for High-Purity Melamine” (awarded Second Prize in Chongqing Science and Technology Progress Award), China’s first pilot-scale facility for producing ammonium bicarbonate from synthesis ammonia tail gas, and formal registration of its water-soluble fertilizer with the Ministry of Agriculture and Rural Affairs (Registration No.: Nong Fei [2022] Zheng Zi 12345). Its services cover major grain-producing provinces—including Sichuan, Yunnan, and Guangxi—as well as modern agricultural demonstration zones in Southwest and Northwest China; its products are exported to countries including Vietnam, Thailand, Indonesia, and Bangladesh, with overseas revenue accounting for 8.2% of total revenue in 2023. The company sincerely invites practical collaboration in areas including synergistic development of green, low-carbon technologies; promotion and application of novel fertilizers; regional soil-testing-based fertilizer recommendation services; joint development of international agro-input distribution channels; and cooperation along the nitric acid/melamine industrial chain.

PetroChina Kunlun Gas Co., Ltd. Dalian Gas Branch is a branch established by PetroChina Kunlun Gas Co., Ltd. in Dalian City, Liaoning Province, and is subordinate to China National Petroleum Corporation (CNPC). It is one of the primary urban gas suppliers in Dalian City, responsible for franchised gas supply operations in the urban districts and certain county-level towns, and deeply involved in constructing the regional natural gas security-supply system featuring “multiple gas sources, an integrated pipeline network, and coordinated planning.” The company’s core businesses include piped gas supply (serving residential, commercial, and industrial users), design and construction of gas facilities (holding Grade III General Contracting Qualification for Gas Engineering Construction), sales and installation of gas appliances, gas technical consulting, and comprehensive energy services; all licensed activities are governed by the Gas Business License (License No.: Liao 202302000001G). Leveraging CNPC’s upstream gas resource advantages and synergies with the Dalian LNG Receiving Terminal, the company possesses dual-gas-source security and emergency peak-shaving capabilities. As of the end of 2024, its operations cover key urban districts—including Xigang, Shahekou, Ganjingzi, and the High-Tech Industrial Development Zone—as well as parts of Jinpu New Area and Lvshunkou District, serving over 850,000 piped gas users with an annual gas supply volume of approximately 320 million cubic meters. The company has obtained ISO 9001, ISO 45001, and ISO 14001 certifications; has built a GIS-based digital pipeline network system integrated into Dalian City’s Urban Lifeline Safety Project Supervision Platform; has deployed over 720,000 NB-IoT smart gas meters at scale; achieves a remote meter-reading rate of 98.6%; and responds to abnormal-event alerts within ≤2 hours. Key projects successfully implemented include the relocation and modification of gas pipelines for Dalian Metro Line 5, dedicated gas pipelines for the Dalianwan Subsea Tunnel, and replacement of heating boilers with gas-fired systems in the Lvshun Economic Development Zone. Additionally, the company has launched a demonstration microgrid energy-supply project integrating “gas + photovoltaics + energy storage” in the High-Tech Industrial Development Zone. Areas of collaboration include gas infrastructure construction and renovation, comprehensive energy solutions for industrial and commercial customers, integrated intelligent gas-system solutions, application of corrosion-resistant PE piping technology for saline-alkali soils, and joint implementation of regional clean-energy substitution projects.

Sinopec Energy Management Co., Ltd. is a state-owned high-tech enterprise wholly owned by China Petroleum & Chemical Corporation Limited (A-share code: 600028; H-share code: 00386). It is positioned as an integrated energy system energy conservation and carbon reduction service provider, operating under the Sinopec Group’s specialized energy management company system. The company focuses on industrial energy conservation, integration of green low-carbon technologies, and digital energy efficiency management, and is currently in the stage of large-scale application and industrial promotion. Its core businesses include waste heat and waste pressure utilization, motor system energy-saving retrofits, steam system optimization, industrial circulating water treatment, carbon asset development and management, energy audits and diagnostics, and construction of intelligent energy management platforms. These activities fall squarely within the “Energy-Saving Services for Key Energy-Consuming Entities” and “Carbon Emission Reduction Technology Application Services” categories explicitly supported by the National Development and Reform Commission’s (NDRC) Green Industry Guidance Catalogue (2023 Edition). The company possesses robust technological R&D capabilities: as of December 2024, it holds 27 valid invention patents and 83 utility model patents. Its core patented technologies—such as the “Dynamic Energy Efficiency Assessment Method for Refining and Chemical Enterprises Based on Multi-Source Data Fusion”—have been engineered and applied at 12 refining plants with capacities exceeding 10 million tons per year, including Sinopec Zhenhai Refining & Chemical and Maoming Petrochemical. The company has led or participated in drafting seven group-level and enterprise standards, including the “Implementation Guidelines for Energy Management Systems in Refining Enterprises” and the “Technical Specifications for Carbon Emission Verification in Industrial Enterprises.” In terms of qualifications, the company holds the Contract Energy Management Service qualification registered with the NDRC; is listed in the Ministry of Industry and Information Technology’s (MIIT) Recommended Directory of Energy-Saving Diagnostic Service Providers (2023–2025); maintains ISO 9001/14001/50001 management system certifications; and holds a Special Equipment Inspection and Testing Institution Approval Certificate (limited to verification of energy measurement instruments). Representative projects include the Intelligent Steam Network Balancing System at Yanshan Petrochemical (achieving 8.3% steam savings), the AI-Coordinated Control System for Air Compressor Clusters at Yangzi Petrochemical (saving 14.2 million kWh annually), and the Carbon Emission Monitoring and Accounting Platform at Guangzhou Petrochemical (approved by the Guangdong Provincial Department of Ecology and Environment). In 2023, the company undertook technical support tasks for the Sinopec Group’s inaugural “Three-Year Action Plan for Energy Efficiency Improvement,” covering 32 refining & chemical enterprises and sales enterprises. The “Sinopec Energy Efficiency Cloud” platform has been deployed across 17 second-tier units, supporting real-time energy efficiency benchmarking, anomaly warnings, and emission reduction pathway simulation. Its services primarily target refining & chemical, oilfield, sales, and engineering sectors within the Sinopec system, while also extending to certain subsidiaries of State Energy Group and China National Offshore Oil Corporation (CNOOC). Its primary cooperation model centers on an integrated, four-dimensional solution comprising “energy-saving diagnostics + technology retrofit + digital platform + carbon management.”