The registered address of tianjin mechanical equipment limited is from 5 to 601 sad square, on the south-west side of tianjin city, on the south-west side of tianjin city, where the registration authority is the market supervision authority of the south korean district of tianjin city, with legal representatives zhang pyong, operating on general items: sale of mechanical equipment; sale of pumps and vacuum equipment; sale of hydraulic machinery and components; sale of gas-powered machinery and components; sale of mechanical parts, parts and components; sale of coating equipment; sale of gas compression machinery; sale of equipment for the industrial automated control system; sale of electrical machinery equipment; sale of instrumentation instruments for electricians; development of mechanical equipment; repair of general-purpose equipment; retail sale of hardware products; repair of electrical equipment; outsourcing of engineering; industrial design services; installation services for general mechanical equipment; and technical services, technology development, technical advice, exchange, technology transfer and technology promotion. (in addition to projects subject to authorization under the law, the operation is carried out autonomously under a licence)。