Chongqing Zhongrong Petrochemical Machinery Manufacturing Co., Ltd. is located in Jingkou Industrial Park, Shapingba District, Chongqing. It has a design license for A1 high-pressure container (single-layer) , A2 (low and medium-pressure) fixed pressure vessel, C3 (including low-temperature insulated tank body) tank container mobile pressure vessel design and manufacturing license, GB1 and GC1 pressure pipeline installation transformation and maintenance license, passed ISO9001:2015 quality system certification, and obtained the CNPC product material network access certificate. It covers an area of ​​more than 60,000 square meters, has a total assets of 350 million yuan, and currently has more than 350 employees, including more than 70 professional and technical personnel of various types. Specializing in the research, design and manufacturing of pressure vessels in Class I, II and III, series of low-temperature liquid storage tanks, series of liquefied natural gas storage tanks and their supporting equipment, devices, LNG skid-mounted filling stations, LNG gasification peak shaving stations, as well as pressure vessel equipment used in petroleum, chemical, steel, medicine, aluminum, mining, electromechanical, automobile, food, gas and other industries, and undertakes general contracting business for various low-temperature engineering applications.