General Projects: General equipment manufacturing( Excluding special equipment manufacturing);Metal material manufacturing; Machinery and equipment sales; Machinery and equipment rental; Mechanical equipment research and development; Mechanical and electrical equipment sales; Agricultural machinery sales;Agricultural machinery manufacturing; Mining machinery sales; Mining machinery manufacturing; Fishing machinery sales; Fishery machinery manufacturing; Construction machinery sales; Construction machinery manufacturing; General mechanical equipment installation services; Hydraulic power machinery and components manufacturing; Sales of hydraulic power machinery and components; Hydraulic power machinery and components manufacturing; Pneumatic power machinery and components manufacturing; Sales of pneumatic power machinery and components; Agricultural, forestry, animal husbandry and fishery machinery parts manufacturing; Sales of agricultural, forestry, animal husbandry and fishery machinery parts; Sales of rail transit engineering machinery and parts; Agriculture、 Forest、 Mu、 vice、 Sales of specialized fishing machinery; Mechanical parts、 Parts processing; Mechanical parts、 Parts 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; Special equipment repair; Special equipment manufacturing( Excluding licensed professional equipment manufacturing); Special equipment sales; Construction machinery and equipment rental; Domestic container freight forwarding; Metal processing machinery manufacturing; Charging pile sales; Sales of Class I medical devices; Sales of Class II medical devices; Door and window sales; Sales of traffic and public management signs; Electric bicycle sales; Motorcycle and spare parts retail; International freight forwarding; 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) Licensed Projects: Class III medical device operation。( 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.)