General items: Machinery and equipment leasing; Sales of machinery and equipment; Sales of mechanical parts and components; Sales of mining machinery; Sales of agricultural machinery; Sales of specialized machinery for agriculture, forestry, animal husbandry, sideline and fishery; Sales of hydraulic power machinery and components; Sales of pneumatic power machinery and components; Sales of special equipment; Sales of special equipment for environmental protection; Sales of special equipment for oil refining and chemical production; Sales of metal products; Retail of hardware products; Wholesale of hardware products; Sales of metal tools; Sales of pneumatic and electric tools; Wholesale of auto parts; General merchandise sales; Office supplies sales. (Except for the projects that need to be approved according to law, business activities shall be carried out independently according to law with the business license) Permitted projects: Import and export of goods; Technology import and export. (For projects that need to be approved according to law, business activities can only be carried out with the approval of relevant departments. The specific business projects shall be subject to the approval documents or permits of relevant departments. )