General Projects: Manufacturing of special equipment for environmental protection; Mechanical and electrical equipment manufacturing; Pump and vacuum equipment manufacturing; fan、 Fan Manufacturing; General equipment manufacturing( Excluding special equipment manufacturing); General equipment repair; Sales of underwater systems and operating equipment; electronic、 Mechanical equipment maintenance( Excluding special equipment); General mechanical equipment installation services; Domestic waste treatment equipment manufacturing; Mechanical equipment research and development; Manufacturing of specialized machinery for agriculture, forestry, animal husbandry, sideline production and fishery; Animal Husbandry Machinery Manufacturing; Special equipment manufacturing( Excluding licensed professional equipment manufacturing); Electrical equipment repair; Industrial automatic control system device manufacturing; Distribution switch control equipment manufacturing; Hydraulic power machinery and components manufacturing; Mechanical parts、 Parts processing; Research and development of technologies for harmless resource utilization of agricultural and forestry waste; Comprehensive utilization of agricultural, forestry, animal husbandry and fishery waste; Installation of specialized machinery for agriculture, forestry, animal husbandry, sideline production and fishery、 repair; Agricultural, forestry, animal husbandry and fishery machinery parts manufacturing; Smart agricultural management; Treatment and utilization of livestock and poultry manure; Technical Services、 Technology Development、 Technical Consulting、 Technical Exchange、 Technology Transfer、 Technology Promotion; Environmental consulting services;Labor Services( Excluding labor dispatch); Engineering Management Services; Sales Agent; Import and export of goods; Technology import and export( Except for projects that require approval according to law, Carry out business activities independently in accordance with the law with a business license)