The registered address of tianjin tianjin sky pumping industry (group) ltd. Is located at road no. 7 (custled by the commercial secretary) no. 102, bullyard no. 1 in north cay street, north province, tianjin city. The registration authority is the market supervision authority for north cay district, tianjin city. The legal person is represented by park yang, and its operations include general projects: sale of pumps and vacuum equipment; sale of refined oil and chemical production equipment; technical services, technical development, technical advice, exchange of technology, transfer of technology, extension of technology; leasing of mechanical equipment; sale of mines and machinery; specialized machinery for the construction of tunnels; sale of hydraulic machinery and components; sale of gas-powered machinery and spare parts; sale of machinery and equipment for construction works; development of mechanical and electrical equipment; sale of machinery and electrical equipment; installation, maintenance of specialized machinery for agriculture, forestry, livestock, fisheries and fisheries; installation of general machinery and machinery; maintenance of electronic and mechanical equipment (without special equipment without special requirements); sale of electrical equipment and other equipment for the repair of the electrical system, in accordance with the law