General Projects: Construction machinery manufacturing; Construction machinery sales; Machinery and equipment sales; Engineering and technical research and experimental development; Mechanical equipment research and development; Mining machinery manufacturing; Mining machinery sales; Manufacturing of special equipment for environmental protection; Sales of special equipment for environmental protection;Agricultural machinery manufacturing; Agricultural machinery sales; Hydraulic power machinery and components manufacturing; Sales of hydraulic power machinery and components; General equipment manufacturing( Excluding special equipment manufacturing); Metal cutting machine tool manufacturing; Seal manufacturing; Seal sales; Metal cutting machine tool sales; General parts manufacturing; Auto parts and accessories manufacturing; Manufacturing of specialized machinery for agriculture, forestry, animal husbandry, sideline production and fishery; Agricultural, forestry, animal husbandry and fishery machinery parts manufacturing; Sales of agricultural, forestry, animal husbandry and fishery machinery parts; Mechanical parts、 Parts processing; Special equipment sales; Mechanical parts、 Parts Sales; bearings、 Gear and transmission component manufacturing; Security equipment manufacturing; bearings、 Gear and transmission parts sales; Security equipment sales; Machinery and equipment rental; Construction machinery and equipment rental; Agricultural machinery rental; Special equipment rental; General mechanical equipment installation services; Agricultural machinery services; Engineering Management Services; General equipment repair; Special equipment repair; electronic、 Mechanical equipment maintenance( Excluding special equipment); Installation of specialized machinery for agriculture, forestry, animal husbandry, sideline production and fishery、 repair; Technical Services、 Technology Development、 Technical Consulting、 Technical Exchange、 Technology Transfer、 Technology Promotion; Import and export of goods; Technology import and export; Import and export agent。( Except for projects that require approval according to law, Carry out business activities independently in accordance with the law with a business license) Licensed Projects: Construction project construction。( Projects that require approval according to law, Business activities can only be carried out after approval from relevant departments, The specific business projects are subject to the approval documents or licenses of relevant departments.)