Tractor manufacturing; Agricultural machinery rental;Agricultural machinery manufacturing; Agricultural machinery sales; Mechanical equipment research and development; Machinery and equipment rental; Machinery and equipment sales; Technical Services、 Technology Development、 Technical Consulting、 Technical Exchange、 Technology Transfer、 Technology Promotion; Mechanical and electrical equipment manufacturing; Mechanical and electrical equipment sales; Manufacturing of specialized machinery for agriculture, forestry, animal husbandry, sideline production and fishery; Installation of specialized machinery for agriculture, forestry, animal husbandry, sideline production and fishery、 repair; Agricultural, forestry, animal husbandry and fishery machinery parts manufacturing; Sales of agricultural, forestry, animal husbandry and fishery machinery parts; New energy vehicle sales; Auto parts and accessories manufacturing; Auto parts retail; Auto parts wholesale; Mechanical parts、 Parts processing; Sales of special equipment for environmental protection; Construction machinery sales; Domestic waste treatment equipment manufacturing; Road motor vehicle production; Special equipment manufacturing; Special equipment design; Installation, modification and repair of special equipment; Metal structure manufacturing; Various engineering construction activities; General mechanical equipment installation services; Non-residential real estate rentals; Housing rental; Real estate development and operation; Land use rights lease; Warehousing equipment rental services; General cargo warehousing services( Does not contain hazardous chemicals or other items that require licensing and approval); Road freight transport( Online freight); Transport cargo packaging service; Park management services( Self-management of general business projects, Licensed business projects are operated with relevant licenses or approval documents)( Projects that require approval according to law, Business activities can only be carried out after approval from relevant departments。)