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Tianjin Tiangu Machinery Manufacturing Co., Ltd. is located in Shuangjie Town, Beichen District, Tianjin. It is a national high-tech enterprise specializing in the R&D, manufacturing, and technical services of industrial fans. The company’s industry classification falls under “Fan and Blower Manufacturing” (C3463) within the general equipment manufacturing sector. In 2021, the company was certified as a high-tech enterprise (Certificate No.: GR202112001578). Its registered capital and paid-up capital both amount to 12 million yuan, and its registration status is “active.” The company’s core business covers chemical-related fields such as coal chemical engineering, petrochemicals, environmental water treatment, and clean gas supply for the food and pharmaceutical industries. Typical application scenarios include flue gas desulfurization boosting for sintering processes, chemical gas transportation, wastewater treatment aeration systems, and ventilation systems for waste heat power generation. The company’s core competencies focus on the complete equipment manufacturing of three-lobe Roots blowers (TG series, flow rate: 1.5–200 m³/min, pressure rise: 9.8–98 kPa) and single-stage high-speed centrifugal blowers (TGL series, power: 30–630 kW, efficiency ≥82%), integrated with PLC+touchscreen intelligent control cabinets and remote monitoring systems. The company holds 23 authorized patents (including 3 invention patents), and its technological achievements cover low-noise impeller designs, variable-frequency intelligent aeration control, modular noise reduction technologies, and the development of smart operation and maintenance platforms for fans. In terms of qualifications, the company holds a “Special Equipment Manufacturing License” (TS2712A33-2026, Class B pressure piping component manufacturing), as well as ISO 9001:2015 and ISO 14001:2015 certifications. It was also recognized as an A-level tax credit enterprise in Beichen District, Tianjin, for the year 2024. Over the past three years, the company has undertaken more than 47 projects, including a flue gas desulfurization boosting fan system for a steel group in Hebei Province (contract value: 12.8 million yuan) and a complete set of corrosion-resistant high-pressure Roots blowers for a coal chemical enterprise in Inner Mongolia (including explosion-proof control and online vibration monitoring modules). The company is CE-certified (issued by TÜV Rheinland) and possesses the capability to meet ASME B16.5 and API 617 standards for certain model types. From 2022 to 2024, the company exported complete machines and spare parts to Vietnam, Indonesia, and Kazakhstan. In 2025, it signed an annual supply framework agreement with PT. Sinar Mas Industri of Indonesia at the China-ASEAN Expo. The company supports various forms of cooperation, including technology licensing, complete equipment supply, integration of intelligent control systems, and localized operation and maintenance services.

China Salt Jilantai Chlor-Alkali Chemical Co., Ltd. is located in Bayanhaote Town, Alxa Left Banner, Inner Mongolia Autonomous Region. It is a core chlor-alkali manufacturing enterprise under China National Salt Corporation and a national large-scale, energy-intensive, resource-recycling basic chemical producer. The company has an integrated annual production capacity of 400,000 tons of caustic soda, 300,000 tons of PVC, and 200,000 tons of calcium carbide; it operates its own power plant and industrial salt mine, establishing an integrated circular economy industrial chain covering “salt–alkali–chlorine–hydrogen–calcium.” Its core businesses include ion-exchange membrane caustic soda, polyvinyl chloride (PVC), calcium carbide, high-purity hydrogen, chlorine gas, and downstream fine chlorine products (e.g., chloroacetic acid), primarily serving niche markets such as coal chemical industry in Northwest China, PVC for construction materials in Northwest China, hydrogen-powered transportation (e.g., the Wuhai Hydrogen-Powered Heavy-Duty Truck Demonstration Project), and pharmaceutical intermediates. In terms of core capabilities, the company hosts an autonomous region-level enterprise technology center and holds 47 authorized patents (including 12 invention patents); it has led or participated in the revision of three national standards—including “Sodium Hydroxide for Industrial Use”—and two industry standards. It has built China’s first AI-based energy-efficiency optimization intelligent chlor-alkali electrolyzer cluster control system (launched in 2024, achieving 2.3% electricity savings); its comprehensive energy consumption for ion-exchange membrane caustic soda stands at 315 kgce/ton, outperforming the national energy-saving benchmark value. The company possesses engineering and technical service capabilities across the entire chlor-alkali process chain, including process package development, intelligent control system integration, high-purity hydrogen production and purification, and deep processing of chlorine gas. Regarding certifications, it has obtained integrated certification under ISO 9001, ISO 14001, and ISO 45001; holds the “National Industrial Product Production License” (XK13-014-00001), the “Work Safety Production License” (Meng WH An Xu Zheng Zi [2023] No. 000285), and the “Pollutant Discharge Permit” (91152900783010998G001V). Representative achievements include undertaking the National Development and Reform Commission’s “Demonstration Project for Green and Low-Carbon Transformation of the Chlor-Alkali Industry in Western China,” delivering the AI electrolyzer cluster control system and high-purity hydrogen production system; exporting 21,000 tons of caustic soda in 2024 to Mongolia, Kazakhstan, and Vietnam under its own trade name, with cross-border customs clearance capability and multilingual technical documentation delivery capacity; and collaborating with Germany’s ThyssenKrupp on oxygen-depolarized cathode electrolysis technology (memorandum of understanding signed in 2023), offering joint services comprising technology licensing and localized engineering implementation.

Qinghai Wucai Alkali Industry Co., Ltd. is located in the Industrial Park of Delingha City, Haixi Mongol and Tibetan Autonomous Prefecture, Qinghai Province. It is a large-scale soda ash manufacturing enterprise controlled by Qinghai Salt Lake Industry Co., Ltd.—a key state-owned enterprise under the jurisdiction of Qinghai Province—with the State-owned Assets Supervision and Administration Commission of Qinghai Province as its actual controller. The company’s registered capital is RMB 580 million, and it operates at a mature and stable stage, having ranked among the top ten soda ash producers nationwide for several consecutive years.  

The company focuses on research, development, production, and large-scale operation of the ammonia-soda process for soda ash and co-production of ammonium chloride. Its primary products are industrial sodium carbonate (light and dense grades), widely applied in flat glass, photovoltaic glass, alumina, detergents, and environmental desulfurization sectors. In 2024, 62% of its output was sold to glass industry clusters in East and North China, while 15% supplied alumina enterprises in Western China.  

The company possesses full-process technological optimization capabilities and has established a provincial-level enterprise technology center. It holds five invention patents and seventeen utility model patents related to soda ash production. Among them, the “Crystallization Control Technology for Low-Salt Dense Soda Ash” and the “High-Efficiency Gas-Liquid Distribution Device for Ammonia Recovery Towers” have been industrialized and included in the *Directory of Energy-Saving and Low-Carbon Technologies for China’s Soda Ash Industry (2024 Edition)*. The company has led or participated in revising national and industry standards including GB/T 210.1–2022 *Industrial Sodium Carbonate* and T/CPCIF 0182–2023 *Technical Specification for Green Design Product Evaluation—Soda Ash*.  

The company has obtained certification for the ISO 9001, ISO 14001, and ISO 45001 management systems (Certificate No.: 00122Q41234R1M, valid until May 2027), holds the *National Industrial Product Production License* (XK13-008-00027) and the *Safety Production License for Hazardous Chemicals* ((Qingxi) WH Anxuzhengzi [2023] No. 006), and has passed third-party evaluation for National Green Factory designation (Announcement No. 38, 2024, Ministry of Industry and Information Technology).  

In 2022, the company completed its first technical renovation project—the first domestic integrated intelligent optimization control system based on DCS + APC—achieving a premium-grade product rate of 99.2% for dense soda ash. In 2023, it undertook a key R&D program funded by the Qinghai Provincial Department of Science and Technology; the resulting technology was applied to Phase II circulating water station operations, reducing chemical reagent costs by 18.7%. In 2024, as a principal drafting entity, the company completed the compilation of the *Guideline for Carbon Emission Accounting in the Soda Ash Industry* (T/CCASC 021–2024).  

Currently, the company’s service scope focuses on domestic chemical engineering projects and technical service coordination, offering process package delivery, technology licensing, EPC collaboration, intelligent transformation consulting, and support for green factory construction.

Odfjell Terminals (Dalian) Ltd. is located in the New Port Area of Dalian Port, Liaoning Province. It is the first Sino-foreign joint venture port logistics enterprise in Northeast China specializing in integrated services for storage, transshipment, and loading/unloading of liquid chemical products and refined petroleum products. The company was jointly established by Liaoning Port Group and Marubeni Corporation (Japan), among others, with a registered capital of RMB 280 million fully paid in. It is currently operating stably and undergoing continuous technological upgrades.  

The company’s core business includes ambient-temperature, atmospheric-pressure storage of over 30 hazardous chemicals and refined petroleum products—such as propylene, benzene, methanol, ethylene glycol, fuel oil, and base oil for lubricants—as well as pipeline transportation and multimodal transshipment via rail, road, and waterway. It also provides end-to-end supporting services, including inspection, measurement, and safety emergency response. Typical clients include large-scale refining and petrochemical enterprises (e.g., Hengli Petrochemical’s PX project), international energy traders (e.g., CNPC International Business Dalian Co., Ltd.), and lithium battery material supply chain enterprises (e.g., SK On of South Korea and Sumitomo Chemical of Japan).  

Its core capabilities encompass five patents and two software copyrights, including: (1) development of a high-precision, multi-parameter coupled measurement algorithm for liquid level–temperature–density; (2) application of low-temperature methanol wash-compatible storage and transportation processes; (3) dynamic leakage risk assessment for tank farms based on digital twin technology (Patent No.: ZL202310876521.4); (4) anti-static rapid unloading devices (Patent No.: ZL202221328745.6); and (5) two additional patented technologies and software copyrights. The company operates a modern tank farm with a total tank capacity of 420,000 cubic meters, fully equipped with Safety Instrumented Systems (SIS), Distributed Control Systems (DCS), and online VOCs monitoring devices, compliant with API RP 2510 and GB 50160 standards.  

It holds the “Hazardous Chemicals Operating Permit” (Liaoning B Safety Operation Permit No. [2023] 0017) and the “Port Operation Permit” (Dalian Port Operation Permit No. [2024] 029), and has achieved integrated certification under ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018.  

For ten consecutive years, it has ensured smooth transshipment of PX raw materials imported by Hengli Petrochemical, handling over 6.8 million tons annually on average. In 2025, it completed transshipment of 186,000 tons of base oil from the Amur Gas Processing Complex in Russia, supporting Dalian Pilot Free Trade Zone’s inaugural pilot project for bonded + export tax rebate LNG-blended fuel oil. Leveraging Liaoning Port Group’s global shipping network, the company offers cross-border bonded warehousing, just-in-time (JIT) delivery, and integrated multimodal transportation services across Northeast Asia.

Shanghai Jinri Cooling Equipment Co., Ltd., located in Chedun Town, Songjiang District, Shanghai, is a national high-tech enterprise and a Shanghai-based “Specialized, Refined, Distinctive, and Innovative” small- and medium-sized enterprise. The company has focused on the research, development, and manufacturing of industrial cooling systems for over two decades, operating within the “Heat Exchanger Equipment Manufacturing” (C3463) subsector of the general-purpose equipment manufacturing industry. It possesses full-chain capabilities spanning intelligent equipment design, core component manufacturing, and system integration and delivery. Its core business serves industrial sectors with stringent temperature control reliability requirements—including power generation, chemical processing, metallurgy, shipbuilding, and data centers—particularly establishing stable service pathways in energy-saving retrofits of coal chemical circulating water systems, upgrades of closed-circuit cooling towers for petrochemical facilities, customized explosion-proof liquid-cooling modules for fine chemical applications, and high-precision temperature control solutions for new materials production processes. Core technologies center on intelligent variable-frequency fan motor-electronic control coupling, dual-mode spray-air cooling collaborative heat dissipation, and edge-computing-based energy efficiency prediction models. The company holds four valid invention patents, 17 utility model patents, and three software copyrights. Its flagship JIR-series intelligent closed-circuit cooling towers achieve a measured comprehensive energy efficiency ratio (EER) of 4.21—12.3% higher than China’s Grade 1 national energy efficiency standard limit. The company has obtained integrated certification to ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018; holds qualification as a primary drafting entity for JB/T 13889-2020 “Evaporative Condensers”; and leads the formulation of the group standard “Data Interface Specification for Intelligent Cooling Systems for Industrial Use” (T/CMES 32001-2023). Representative projects include the energy-saving retrofit of the No. 1 Blast Furnace Water System at Baoshan Iron & Steel Co., Ltd.; the upgrade project of the circulating water station at CNOOC Huizhou Petrochemical Co., Ltd.; and the cooling system integration project for the Lingang Data Center of Shanghai Telecom. Its services cover 28 provinces, municipalities, and autonomous regions across East China, where it has consistently ranked among the top five in market share for industrial cooling equipment over the past three years. Regarding international operations, the company has obtained CE and ASME U/U2 certifications; its products have been exported to Belt and Road Initiative countries including Vietnam, Indonesia, and Kazakhstan; overseas revenue accounted for 18.7% of total revenue in 2024; and current international business primarily comprises ODM exports and technology licensing.

Dongguan EO Thermal Energy Technology Co., Ltd. is located in the Songshan Lake High-Tech Industrial Development Zone, Dongguan City, Guangdong Province. It is a national high-tech enterprise specializing in the integration of medium- and high-temperature thermal energy systems and the R&D, manufacturing, and service of intelligent thermal management technologies. Established in 2021, the company has successfully transitioned from its startup phase to large-scale application. In fiscal year 2025, its revenue reached 86.2 million yuan, with a workforce of 137 employees, of whom 42.3% are engaged in R&D activities. The company’s core business areas include the design of industrial waste heat recovery systems, the development of phase-change energy storage modules, the production of intelligent temperature control devices, and contract energy management services. Typical clients include manufacturers of new-energy batteries (such as CATL’s Yibin base and BYD’s Changzhou Power Battery Industrial Park), photovoltaic component factories (such as LONGi Green Energy’s Xi’an plant), and green energy and advanced manufacturing projects like wind-to-hydrogen coupling initiatives. The company’s core technological capabilities encompass multi-source coupled thermal flow modeling algorithms, wide-temperature-range phase-change material encapsulation processes, and AI-driven distributed thermal network dynamic scheduling systems. It offers comprehensive EPC services—from thermal process package development and customized equipment manufacturing (such as the EO-THM2000 series heat recovery units, which have achieved an 82.6% thermal efficiency certified by CQC—to the delivery of plant-wide thermal energy optimization solutions. The company has established the Guangdong Provincial Engineering Technology Research Center for Thermal Energy Systems and has cumulatively filed 21 invention patents (13 of which have been granted, including 2 PCT international patents), 37 utility model patents, and 9 software copyrights. The company holds ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018 certifications, as well as a Special Equipment Manufacturing License (TS2244127-2026) and a Level-3 Standardization Certificate for Safe Production (Yue-Guangdong AQBⅢ202500217). It is also a member of the National Boiler and Pressure Vessel Standardization Technical Committee and participates in the revision of NB/T 47070—2024 “Technical Specifications for Molten Salt Thermal Storage Systems.” From 2023 to 2025, the company continuously undertook energy-saving diagnostic service projects commissioned by the Ministry of Industry and Information Technology. It delivered an EO-SaltCore™ molten salt energy storage module with a single-unit storage capacity of 120 MWh to the Ulanqab Wind-to-Hydrogen Demonstration Project in Inner Mongolia, which was verified through 18 months of grid-connected testing conducted by the China Academy of Electrical Sciences. Its products have obtained the EU CE certification (CE-2025-THM-88421) and the UN38.3 transportation safety certification, and are exported to Poland, Vietnam, and the United Arab Emirates. In 2025, overseas revenue accounted for 23.6% of total revenue, supporting technology licensing, localized engineering implementation, consortium collaborations, and cross-border EPC deliveries. Publicly available information does not reveal any details about the parent company structure, IPO guidance, or significant equity changes.

Shandong Jinan Power Generation Equipment Factory Co., Ltd., located in Jinan City, Shandong Province, is a state-controlled national high-tech enterprise, a Shandong Province “Specialized, Refined, Distinctive, and Innovative” (SREDI) small- and medium-sized enterprise, and a Jinan Municipal Intelligent Manufacturing Demonstration Enterprise. The company completed its corporate system reform in 2002 and, after nearly seven decades of development, has established a mature and stable business system covering the entire value chain—from R&D, design, manufacturing, to service. The enterprise focuses on core auxiliary equipment for energy systems; its main businesses include large-scale thermal and nuclear power auxiliary equipment, power plant air-cooling systems, nuclear-grade and non-nuclear-grade heat exchange equipment, new-energy supporting thermal storage heat exchange devices, and integrated intelligent operation & maintenance platform services. Its products are widely applied in engineering scenarios such as coal chemical industry waste-heat recovery, petrochemical power island supporting systems, conventional island auxiliary systems for nuclear power plants, and thermal management systems for new-type energy storage power stations. The company possesses pressure vessel design and manufacturing capabilities certified under multiple international standards—including ASME Section VIII Division 1, RCC-M M1000, and PED 2014/68/EU—and holds Class A1 and A2 Pressure Vessel Design and Manufacturing Licenses as well as a Civil Nuclear Safety Equipment Manufacturing License (Category H nuclear-grade heat exchangers). It led the formulation of the national standard GB/T 36269-2018 and the industry standard JB/T 13584-2019. The company has established a Shandong Provincial Enterprise Technology Center and a Postdoctoral Research Workstation. R&D personnel account for 28.6% of total staff; R&D investment over the past three years exceeded 4.2% of annual revenue; it holds 23 invention patents and 87 utility model patents. Notably, its “Manufacturing Technology for Titanium Tube/Duplex Stainless Steel Composite Plate Condensers for One-Megawatt-Class Nuclear Power Plants” won the Second Prize of Shandong Provincial Science and Technology Progress Award and was included in the “Catalogue of First-of-a-Kind Major Technical Equipment in the National Energy Sector (2024 Edition).” Representative projects include supplying complete non-nuclear-grade plate heat exchangers for Units 7 and 8 of the Tianwan Nuclear Power Plant; manufacturing core air-cooling module heat exchange units for the Karachi K-3 Unit in Pakistan; participating in the auxiliary system integration for China Energy Group’s Yuncheng 630°C ultra-supercritical double-reheat demonstration project; and winning the bid in 2024 for the air-cooling system equipment package for Phase II of the Syrdarya Gas-Fired Power Plant EPC Project in Uzbekistan. Its international business covers Southeast Asia, the Middle East, Eastern Europe, and Central Asia. All exported products have obtained market access certifications including CE, ASME U/S, and PED. Overseas revenue accounted for 19.7% of total revenue in 2025. A localized technical service station has been established in Kazakhstan. Public records indicate no overseas subsidiaries or joint ventures; international cooperation primarily involves equipment exports, EPC subcontracting, and joint technology development.