Engineering and technology research and experimental development; hydraulic power machinery and component manufacturing; hydraulic power machinery and component sales; intelligent control system integration; industrial automatic control system device sales; mechanical equipment research and development; general equipment manufacturing (excluding special equipment manufacturing); mechanical equipment sales; general equipment repair; special equipment repair; automobile spare parts wholesale; automobile spare parts and spare parts Sales; wholesale of motorcycles and spare parts; retail of motorcycles and spare parts; sales of metal materials; technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; import and export of goods; technology import and export; park management services; non-residential real estate leasing; agricultural machinery services; agricultural machinery sales; agricultural machinery manufacturing; software development; software sales.