The registration address of the beijing long-term heng dynasty ltd. Is located on the 15th to 16th floor of unit 2 of the 10th floor of the bong dynasty, beijing city. The registration authority is the market supervisory authority of the hong dynasty district of beijing and is represented by legal persons. It operates on general items: technical services, technology development, technical advice, technology exchange, technology transfer, technology promotion; information advisory services (other than licensed information consultancy); marketing of communications equipment; sale of chemical products (other than licensed chemical products); socio-economic consultancy services; sale of mechanical equipment; sale of instrumentation instruments; sale of appliances; retailing of solar appliances; conference and exhibition services; manufacture of specialized instruments; repair of instrumentation forms; sale of type 1 medical devices; sale of electronic devices and mechanical components; ...