General equipment manufacturing (excluding special equipment manufacturing); pharmaceutical special equipment manufacturing; pharmaceutical special equipment sales; mechanical and electrical equipment manufacturing; mechanical and electrical equipment sales; mechanical equipment sales; general parts manufacturing; mechanical parts and parts processing; mechanical parts and parts sales; electronic and mechanical equipment maintenance (excluding special equipment); hardware product manufacturing; hardware product wholesale; mold manufacturing; mold sales; technical glass product manufacturing; daily glass product manufacturing; technical glass product sales; daily glass product sales Sales; metal structure manufacturing; metal structure sales; plastic product manufacturing; plastic product sales; rubber product manufacturing; rubber product sales; metal chains and other metal products manufacturing; metal product sales; wholesale of automobile parts; wholesale of motorcycles and spare parts; sales of electronic products; sales of chemical products (excluding licensed chemical products); sales of non-metallic minerals and products; sales of building materials; engineering and technology research and experimental development; technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion