Dalian Jinzhou Gaohong Gas Factory is located in Hongta Village, Yongzheng Subdistrict, Jinhua District, Dalian City, Liaoning Province. Established in 2005, it is a personally owned enterprise that has operated continuously for nearly two decades. The factory specializes in the production, filling, and sale of industrial gases and functions as a regional foundational gas service provider. Its business covers Dalian City and surrounding cities including Yingkou and Dandong, focusing on on-site gas supply and bottled-gas delivery for small- and medium-sized manufacturing customers. Core business activities include the full-process filling and sale of oxygen, nitrogen, argon, carbon dioxide, acetylene, hydrogen, liquid oxygen, liquid nitrogen, liquid argon, and dissolved acetylene. Typical application scenarios encompass metal welding and cutting in mechanical processing, inert gas protection for food preservation, medical gas supply to healthcare facilities, and small- to medium-scale chemical and manufacturing processes such as metal heat treatment and electronic component cleaning. The enterprise possesses filling capabilities for mobile pressure vessels (liquid oxygen, liquid nitrogen, liquid argon) and conducts compliant operations under its self-held Special Equipment Production License (TS2221025-2026) and Hazardous Chemicals Business License (Liaoning (Dalian) Emergency Management Hazardous Chemicals Business Permit No. [2023] 0087, valid until June 28, 2026). It holds an Emission Permit issued by the Ministry of Ecology and Environment (Permit No.: 91210213MA0UQYJL7T001V), authorizing emissions of non-methane total hydrocarbons, particulate matter, and noise, in compliance with standards GB16297-1996 and GB12348-2008. Over the past three years, the enterprise has consistently received no major hazard rectification items during “dual-random” inspections conducted by the Liaoning Provincial Department of Emergency Management, reflecting sound safety production records. Publicly available information does not indicate possession of ISO management system certifications, designation as a High-Tech Enterprise, recognition as a “Specialized, Refined, Distinctive, and Innovative” enterprise, independently developed patents, or participation in industry standard development. Representative performance includes stable service provision to small- and medium-sized mechanical processing plants, food processing enterprises, and primary-level medical institutions across Northeast China, offering customized bottled-gas delivery and on-site low-temperature liquid storage tank gas supply solutions; however, specific project names or large-scale chemical plant support cases are not disclosed. The enterprise’s current service scope is limited to the domestic Northeast region; it lacks overseas investment registration, Authorized Economic Operator (AEO) certification, registration as an importer/exporter of goods, or international client collaboration cases. Publicly available information does not indicate multilingual service capability, overseas engineering delivery experience, or technology licensing export capacity. Its primary cooperation models consist of localized gas filling and sales, demand-based delivery, and leasing of small-scale on-site gas supply systems.

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.

Zouping Hongxu Thermal Power Co., Ltd. is a regional cogeneration enterprise based in Zouping City and dedicated to providing industrial heating supporting services. Its core businesses include heat production and supply, power generation (limited to branch operations), coal sales, installation and maintenance of heating equipment, and consulting services for heating technologies. The company primarily serves industrial parks and surrounding industrial enterprises within Zouping City, delivering stable and reliable industrial steam and centralized heating services; its operations exhibit distinct regional and public utility characteristics. Leveraging localized operational capabilities, the company possesses practical experience in implementing small- and medium-scale heating infrastructure projects—such as heating pipeline maintenance and repair, procurement of heat exchange station equipment, and upgrades to steam metering systems—serving regional manufacturing enterprises and industrial park clients. Collaborative efforts focus on pragmatic energy service scenarios, including industrial steam supply, operation and maintenance support for park heating systems, integrated heating equipment solutions, and technical consulting.

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.