General Projects: Engineering and technical research and experimental development; Mechanical equipment research and development; Mechanical parts、 Parts processing; Machinery and equipment sales; Agricultural, forestry, animal husbandry and fishery machinery parts manufacturing; Sales of agricultural, forestry, animal husbandry and fishery machinery parts; Special equipment manufacturing( Excluding licensed professional equipment manufacturing); Sales of steel bars for construction; Hardware product manufacturing; Hardware wholesale; Hardware product research and development; Hardware product retail; mold manufacturing; mold sales; Domestic trade agent; Import and export of goods; Technology import and export; Metal surface treatment and heat treatment processing; Installation of specialized machinery for agriculture, forestry, animal husbandry, sideline production and fishery、 repair; Internet sales( Except for the sale of goods that require a license); Information consulting services( No licensing information consulting services);Chemical product sales( Does not contain permitted chemical products); Petroleum product sales( No hazardous chemicals); Building materials sales; Home appliance sales; Daily necessities sales; Sales of daily chemical products; Sales of labor protection products; Stationery retail;Veterinary equipment sales; Sales of special instruments for agriculture, forestry, animal husbandry and fishery; Technical Services、 Technology Development、 Technical Consulting、 Technical Exchange、 Technology Transfer、 Technology Promotion; Car Sales; Auto parts retail。( 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.)