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Wuxi Zhangjing Pressure Vessel Manufacturing Co., Ltd. is located in Donggang Town, Xishan District, Wuxi City, Jiangsu Province. The company is a national high-tech enterprise, a specialized, refined, and innovative small- and medium-sized enterprise in Jiangsu Province, and a technology-based SME. It specializes in the design, manufacturing, and technical services of pressure vessels and operates within the niche segment of “boiler, pressure vessel, and pipeline manufacturing” (C3432) in the special equipment manufacturing industry. The company is currently in a phase of stable development. Its core products include hydrogenation reactors for oil refining and petrochemicals, waste heat boilers配套 with coal-to-gasification furnaces, corrosion-resistant titanium-composite plate reactors used for the synthesis of lithium battery cathode materials, and integrated valve modules for hydrogen storage and transportation systems at 35 MPa/70 MPa—such as on-vehicle hydrogen storage cylinders. These high-end equipment are primarily serving sectors including petrochemicals, coal chemical industry, new energy materials, nuclear power, and environmental protection engineering. The company holds full qualifications for both rule-based design (A1/A2 levels) and manufacturing (A1/A2/D1/D2 levels) of stationary pressure vessels (TS2232036-2027), covering pressure vessels from Class I to Class III. It is one of the few private enterprises in China that has obtained A1-level design and manufacturing licenses for high-pressure and ultra-high-pressure vessels. The company also holds ASME U/U2 certification (U-2025-0186, valid until 2028) and complies with ASME BPVC Section VIII Div. 1/2 standards. Additionally, it has achieved ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018 certifications, as well as PED 2014/68/EU CE certification (NB 0123). The company has established the Jiangsu Provincial Advanced Manufacturing Engineering Technology Research Center for Pressure Vessels and holds three invention patents and twelve utility model patents. Its "thick-walled cylinder narrow-gap automatic welding process" was applied to the second-phase project of Zhenhai Refining & Chemical Company of Sinopec, achieving a first-pass weld qualification rate of 99.8%. Typical project achievements include supplying a Φ4200×32000 mm hydrogenation reactor (design pressure 18.5 MPa) to Hengli Petrochemical (Dalian); delivering a complete set of solvent recovery tower equipment for the 300,000-ton/year lithium iron phosphate project of China National Chemical Corporation Yunnan Energy Investment; and undertaking the manufacturing of boron acid storage tank clusters for the Zhangzhou Nuclear Power Plant of China National Nuclear Corporation. The company has exported eight sets of ASME-standard heat exchangers to PetroVietnam in Vietnam and KazMunayGas in Kazakhstan. In 2025, it signed a technical cooperation memorandum with ADNOC in the United Arab Emirates, planning to jointly establish a localized service center in the Middle East to support cross-border EPC projects, technology licensing, project implementation, and consortium collaborations.

Hunan Tianyi Aoxing Pump Industry Co., Ltd., located in the High-Tech Zone of Changsha City, Hunan Province, is a national high-tech enterprise specializing in the R&D, manufacturing, and full-lifecycle technical services of industrial pumps and system solutions. The company operates in the general equipment manufacturing industry, specifically in the production of pumps, valves, compressors, and similar machinery (GB/T 4754-2017: C3441). It is currently in a phase of scaled growth, with both registered capital and paid-up capital standing at RMB 120 million. The company’s core business covers the design, production, and technical services for high-end centrifugal pump products, including chemical process pumps, pumps for the oil and petrochemical industries, auxiliary system pumps for nuclear power plants, high-pressure seawater desalination pumps, and intelligent integrated pump stations. Typical application scenarios include the petrochemical, coal chemical, power, municipal water supply, marine engineering, and nuclear power support sectors. The company’s core technological capabilities encompass advanced hydraulic model optimization for high-parameter applications (based on its proprietary TYA-HYDRO V3.2 model library), laser cladding reinforcement technology for corrosion-resistant alloy materials (e.g., treating INCONEL 625 impellers), vibration and noise reduction for pump units, and the development of digital twin-based operation and maintenance platforms. To date, the company has achieved industrial applications of 12 invention patents, 47 utility model patents, and 8 software copyrights. The average mean time between failures (MTBF) for its pump units exceeds 24,000 hours (according to a third-party testing report by the China Pump Association in 2025). The company holds ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018 certifications, as well as a “Special Equipment Manufacturing License” (pressure piping components, Class A1/A2) and a “Civil Nuclear Safety Equipment Design/Manufacturing License” (nuclear secondary-class pumps, valid until June 2027). It is also certified under API 610, 12th Edition, and API 682. In 2024, the company was included in the Ministry of Industry and Information Technology’s list of “Specialized, Fine, Distinctive, and Innovative” small and medium-sized enterprises. Notable achievements include providing a complete set of high-temperature heavy-oil pump units for Sinopec Zhenhai Refining & Chemical’s 2.6-million-ton-per-year aromatics complex (put into operation in 2023); undertaking the domestic substitution task for boron injection pumps in the conventional island of the second-phase Sanmen Nuclear Power Project of China National Nuclear Corporation (delivered in 2025 and successfully commissioned on the first attempt); and executing the EPC project for the seawater intake pump station at the Beihai Power Plant in Guangxi (including six 2,800-kW vertical mixed-flow pumps and an intelligent monitoring system). In terms of international business, the company’s products have been exported to countries along the Belt and Road Initiative, such as Kazakhstan (KazMunayGas project), Vietnam (Vung Ang 2 thermal power plant), and Oman (Duqm refining and petrochemical complex). Its products are CE and PED 2014/68/EU certified. The company primarily engages in project-based exports combined with technology licensing and localized engineering implementation, and it has not yet established overseas branch offices or subsidiaries.

Xinxiang Bashan Screening Machinery Co., Ltd. is located in Zhoucun Industrial Zone, Wangcun Town, Muye District, Xinxiang City, Henan Province. It is a national high-tech enterprise specializing in the R&D, manufacturing, and system integration of vibrating screening equipment. The company operates in the niche segment of material screening and grading equipment within the specialized equipment manufacturing industry (C35). With a registered capital of 10 million yuan fully paid up, the company is currently in good standing and offers stable supply of mid-range vibrating screening equipment as well as customized engineering services. The company’s core business covers circular vibrating screens, linear vibrating screens, high-frequency vibrating screens, ultrasonic vibrating screens, multi-layer self-cleaning screening machines, and intelligent screening control systems. Its products are widely used in chemical engineering applications that demand precise particle size control and anti-blocking performance, such as coal chemical industry (e.g., grading and recovery of coal gangue), fine chemical industry (e.g., fine screening of positive and negative electrode materials for lithium batteries), new materials (dry purification of non-metallic minerals), and environmental solid waste treatment. The company’s core technologies focus on multi-degree-of-freedom excitation force coupling control, dynamic tension compensation of screen surfaces, micro-powder anti-blocking and self-cleaning structures, and remote operation monitoring systems based on PLC + HMI. The vibration frequency control accuracy reaches ±0.2 Hz, and the screening efficiency is 12%–18% higher than the industry average (verified by Report ZXJY-2025-SF-0892 issued by the Henan Provincial Institute of Product Quality Supervision and Inspection). The company holds 4 authorized invention patents, 17 utility model patents, and 3 software copyrights, and has established a provincial-level “Vibration Screening Engineering Technology Research Center.” The company is certified under the ISO 9001:2015 quality management system (Certificate No. 00122Q31234R1M) and holds a “Special Equipment Manufacturing License” (TS2741028-2027; licensed scope: manufacturing of vibrating conveying machinery). It also possesses extended qualifications for the design and manufacture of Class B pressure vessels. Typical project achievements include providing a 3-million-ton-per-year dry grading and screening system for a large fluorite mine in Inner Mongolia (put into operation in 2024) and supplying an ultrafine powder grading production line for lithium battery precursors to a new energy materials enterprise in Guangdong (accepted in 2025). The company has obtained CE certification (CE-MD-2024-88762) and RoHS compliance declarations. Its products are exported to 12 countries including Kazakhstan, Vietnam, Turkey, and South Africa. In 2025, foreign trade revenue accounted for 23.6% of total revenue. The company provides Russian-language user interfaces and is compliant with GOST-R certification requirements. It can offer diversified cooperation models, including equipment supply, technology licensing, localized technical services, and spare parts support. Publicly available information does not indicate that the company holds chemical engineering design qualifications or has been recognized as a “Little Giant” enterprise specializing in innovative and specialized products.

Shandong Dachi Alpha Electric Co., Ltd. is located in Heze City, the “Peony Hometown.” The company was registered and established in November 2004, with a total investment of RMB 65 million. It primarily engages in the research, development, manufacturing, and sales of enclosed busbars rated at 36 kV and below, as well as transformers and switchgear equipment. It ranks among the top three enterprises nationwide in the enclosed busbar industry and currently offers over ten models across two major product series: isolated-phase and common-box enclosed busbars. Its products are operating successfully at China Huaneng Group, China Hydropower Group, Gezhouba Group, Datang Group, and numerous nuclear power companies; they have also been exported to more than thirty countries and regions, including Pakistan, India, Cuba, and the Middle East. The company occupies a site covering 80,000 square meters and has introduced world-class advanced production equipment—including Italian CNC hydraulic plate rolling machines and fully automatic aluminum welding machines—as well as precision testing equipment. Its annual production capacity reaches 2,000 units (sets). The company currently employs 180 people, including 30 R&D technical personnel, four foreign experts, and 50 employees holding bachelor’s degrees or higher. It was the first enterprise in its industry to obtain ISO 9001 Quality Management System Certification and Intellectual Property Management Standardization Certification. It has successively been designated a National High-Tech Enterprise, a “Technology-Based Small and Medium-Sized Enterprise,” a “Shandong Province Advanced Small and Medium-Sized Enterprise,” a “Shandong Province First-of-its-Kind Technical Equipment Enterprise,” a “Shandong Province Gazelle Enterprise,” and a “Shandong Province Specialized, Refined, Distinctive, and Innovative Enterprise.” The brand “Dachi Alpha” is recognized as both a Shandong Provincial Famous Brand and a Shandong Provincial Well-Known Brand.

Shanghai Valve No. 5 Co., Ltd., located in Jiading District, Shanghai, is a Shanghai High-Tech Enterprise under the Shanghai Electric Group, with nearly 70 years of professional valve R&D and manufacturing history. The company is currently undergoing a transformation from traditional manufacturing to a dual-driven model centered on “high-end valves + intelligent services,” possessing a registered capital of RMB 120 million and an A-grade tax credit rating for 2023. Its core business covers sectors including petroleum, chemical, power, metallurgy, municipal engineering, and nuclear power supporting systems, with key service areas encompassing petrochemical refining (e.g., ebullated-bed residue hydroprocessing units), coal chemical processing, fine chemical production, critical nuclear power systems, and overseas energy projects under the Belt and Road Initiative. Core capabilities include complete design and manufacturing of specialty valves for extreme operating conditions—such as ultra-high temperature (≥650°C), ultra-low temperature (≤−196°C), hydrogen sulfide (H₂S) resistance, and high sealing performance (ISO 5208 Class A/B). The company possesses ANSYS Fluent flow-field simulation capability, SolidWorks Simulation structural strength analysis capability, and full FAT (Factory Acceptance Test) capability certified by DNV GL. Its independently developed “Intelligent Valve Monitoring System (IVMS-2000)” has been deployed across multiple key enterprises in the Shanghai Chemical Industry Park and supports integration into DCS platforms via Modbus TCP/OPC UA protocols. The company holds ISO 9001/14001/45001 integrated management system certifications; Special Equipment Production License TS grades A1 (ultra-high pressure), A2 (high pressure), and B (medium/low pressure); and type-test and factory inspection capabilities conforming to mainstream standards including API 598, API 6D, GB/T 12234, and GB/T 12237. It has also completed the EU PED 2014/68/EU Declaration of Conformity and obtained CE marking authorization. Representative projects include: supply of Nuclear Class II globe valves and isolation valves for Unit 2 of Sanmen Nuclear Power Plant in Zhejiang Province (successfully passed on-site supervision and acceptance by China National Nuclear Safety Administration in 2023); supply of H₂S-resistant fully welded ball valves for the ebullated-bed residue hydroprocessing unit at Sinopec Zhenhai Refining & Chemical Company (operating fault-free for three consecutive years as of 2024); and phased delivery of API 6D pipeline ball valves for the modernization retrofit project of the Atirau Refinery in Kazakhstan (deliveries conducted in three batches between 2022 and 2025). Products have been exported to 21 countries, including Russia, India, Vietnam, the United Arab Emirates, and Argentina, with support for ASTM material retesting, hydrostatic burst testing, and pre-audit for ASME BPVC Section III Division 1 NPT certification. The company offers technical licensing, consortium-based EPC collaboration, localized delivery, and full-lifecycle operation and maintenance services.

Shanghai Dalong Machinery Plant Co., Ltd. (abbreviated as “Dalong Machinery Plant”) was established on December 2, 2005. Its legal representative is Lu Zheng, its registered capital is RMB 146.229 million, and its unified social credit code is 913101137831332473. The company’s address is No. 815 Changjiang West Road, Baoshan District, Shanghai. It operates in the general equipment manufacturing industry. Its business scope includes: design, manufacturing, sales, and servicing of various gas compressors and high-pressure pumps; import and export of goods and technologies.

Taicang Jincang Environmental Protection Equipment Co., Ltd. is located in the Taicang High-Tech Industrial Development Zone, Jiangsu Province. Established in 2013, it is a national high-tech enterprise specializing in industrial exhaust gas treatment, VOCs purification, and research & manufacturing of integrated environmental protection equipment. Its registered capital and paid-in capital are both RMB 10 million. The company has 42 employees enrolled in social insurance and maintains an active registration status. Its business covers the entire value chain—from technological R&D, engineering design, equipment manufacturing, to intelligent operation & maintenance services—and falls under the category of “Environmental Protection Specialized Equipment Manufacturing” (C3591) within the specialized equipment manufacturing industry. It is a key enterprise supported by the “High-Quality Development Action Plan for the Environmental Protection Equipment Manufacturing Industry (2022–2025).”  

The company’s core business focuses on comprehensive VOCs control solutions for process industries, including petrochemicals, automotive components, synthetic fiber dyeing & finishing, and fine chemicals. It provides integrated systems such as zeolite rotor + RTO combination process systems, low-temperature plasma-assisted photocatalytic equipment, waste heat recovery retrofitting solutions, and connectivity services for the “KangClean” Intelligent Environmental Cloud Platform.  

The company holds six authorized invention patents (including one PCT international patent), 23 utility model patents, and four software copyrights. Its core technologies include dynamic modeling of low-concentration, high-volume exhaust gases; multi-chamber regenerative thermal oxidizer (RTO) design achieving ≥95% thermal efficiency; and development and deployment of remote operation & maintenance systems based on PLC + SCADA architecture.  

The company has obtained certification for the ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018 management systems. It holds Grade II qualification for specialized contracting of environmental engineering projects (D232107423) and a Work Safety Production License (SuWH Anxuzhengzi [2023] No. 050286). It has been selected as a Jiangsu Provincial “Specialized, Refined, Distinctive, and Innovative” SME for 2025.  

Representative projects include: delivery of a 120,000 m³/h RTO system to a German-invested automotive component manufacturer in Kunshan (VOCs removal efficiency ≥95.2%, verified by SGS); an integrated waste heat recovery + activated carbon adsorption/desorption project for dyeing & finishing stenter exhaust gas at Zhejiang Chemical Fiber Group (supported by Jiangsu Province’s Green Manufacturing Special Fund); and VOCs comprehensive treatment EPC subcontracting services for Sinopec Zhenhai Refining & Chemical Company.  

The company possesses cross-border delivery capability in Southeast Asia and has completed export delivery of low-temperature plasma-assisted photocatalytic equipment to a Thai food processing enterprise (contract value USD 386,000; customs declaration number verifiable). Its technical services extend to six countries, including Vietnam and Thailand, fully compliant with China–ASEAN rules of origin, and support business models including technology licensing + engineering implementation, consortium collaboration, and localized supply.

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.