General Projects: Manufacture of spray guns and similar equipment; Technical Services、 Technology Development、 Technical Consulting、 Technical Exchange、 Technology Transfer、 Technology Promotion; Sales of spray guns and similar equipment; Hardware product manufacturing; Hardware product research and development; Hardware wholesale; Hardware product retail; Auto parts and accessories manufacturing; Auto parts research and development; Auto parts wholesale; Auto parts retail; Pneumatic and electric tool manufacturing; Pneumatic and electric tool sales; Pump and vacuum equipment manufacturing; Pump and vacuum equipment sales; General equipment manufacturing( Excluding special equipment manufacturing); Construction machinery manufacturing; Construction machinery sales;Agricultural machinery manufacturing; Agricultural machinery sales; 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; Instrument Manufacturing; Instrument sales; Other general instrument manufacturing; Intelligent instrument manufacturing; Sales of smart instruments; Electrical instrument manufacturing;Sales of electrical instruments and meters; Metal tool manufacturing; Metal tool sales; Metal product research and development; Mechanical equipment research and development; Installation of specialized machinery for agriculture, forestry, animal husbandry, sideline production and fishery、 repair; General equipment repair; electronic、 Mechanical equipment maintenance( Excluding special equipment); Metal product repair; Instrument repair; Special equipment manufacturing( Excluding licensed professional equipment manufacturing); 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)。