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.