The registered address of shanghai crown valves ltd. Is located in room 225, room 2361 of the golden mountain township, situated in shanghai city, located at the 225th street of shinjing road, with the participation of representatives of the legal entities of liu zhen, who are involved in technical development, technology transfer, technical advice, technical services, installation, commissioning, maintenance of automated control equipment, instrumentation, aerodynamics, valves, pumps, fittings for pipelines, hydraulics, electrical appliances, fluids and accessories, compressors and accessories, environmental protection equipment, sale of mechanical equipment and accessories, import and export of goods and technology, commercial consultancy and business management advice. [projects subject to legal approval may not operate without the approval of the relevant department]