The registration address of water control and equivalent science and technology ltd. Is located at the village of jaru, longhua town, hubei city, hebei province, and is represented by the city's market supervision authority, which operates on general items: manufacture of specialized equipment for environmental protection; sale of specialized equipment for environmental protection; manufacture of general equipment (other than special equipment); manufacture of specialized equipment (other than licensed professional equipment); sale of machinery and equipment; development of mechanical equipment; installation of general mechanical equipment services; lease of mechanical equipment; supply of cold services; processing of mechanical parts and components; sale of mechanical parts, parts and components; manufacture of metal structures; sale of metal structures; research and development of metal products; manufacture of hardware products; wholesale distribution of five gold products; development of electrical switch control equipment; manufacture of electrical switch control equipment; sale of electrical switch control equipment; manufacture of plastics; sale of plastics; repair of general equipment; manufacture of rubber products; sale of rubber products; manufacture of sealed fillings; sale of petroleum, chemical production equipment; manufacture of specialized equipment for refining and chemical production; manufacture of oil; manufacture of chemical products; manufacture of seals. Manufacture of fibreglass enhanced plastics; sale of fibreglass enhanced plastics; sale of metal chains and other metal products; manufacture of metal chains and other metal products; manufacture of metal materials; sale of metal materials; engineering services; repair of metal products; sale of metal products; maintenance of transport facilities; repair of instrumentation instruments; repair of specialized equipment; sale of lamps; externally contracted works; non-ferrous metal alloy manufacturing; non-ferrous metal alloys sales; communications equipment sales; communications equipment manufacturing; radio and television equipment manufacturing (other than radio and television transmission equipment); sale of radio and television transmission equipment; electronic device manufacturing; retail trade in electronic devices; wholesale distribution of electronic devices; sale of electronic products; mechanical and electrical equipment manufacturing; sale of mechanical and electrical equipment; radar and ancillary equipment manufacturing; maintenance of information system operations; maintenance of electronics, mechanical equipment (other than special equipment); technical services, technology development, technical advice, technical exchange, technology transfer, technology promotion (in addition to legally authorized projects, autonomous, unprohibited and unrestricted operations)