Technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; casting machinery manufacturing; general equipment manufacturing (excluding special equipment manufacturing); printing special equipment manufacturing; hydraulic power machinery and component manufacturing; hydraulic power machinery and component manufacturing; water resources special machinery and equipment manufacturing; special equipment manufacturing (excluding licensed professional equipment manufacturing); non-metallic mineral material forming machinery manufacturing; mining machinery manufacturing; machinery manufacturing for construction engineering; special machinery manufacturing for building materials production; agricultural machinery manufacturing; mold manufacturing; mold manufacturing Sales; sales of metal forming machine tools; sales of high-quality special steel materials; professional design services; sales of metal tools; general mechanical equipment installation services; sales of electronic products; sales of mechanical equipment; sales of office equipment; sales of special electronic equipment; sales of hydraulic power machinery and components; retail of hardware products; sales of office supplies; wholesale of automobile parts; wholesale of motorcycles and spare parts; wholesale of bicycles and spare parts; sales of mopeds, scooters and spare parts; sales of building materials; sales of building decoration materials; sales of metal products; sales of metal materials