General projects: sales of metal materials; sales of coal and products; coking; sales of chemical products (excluding licensed chemical products); thermal production and supply; construction of landscaping projects; import and export of goods; smelting of commonly used nonferrous metals; domestic trade agency; engineering Manufacturing of plastics and synthetic resins; sales of engineering plastics and synthetic resins; manufacturing of synthetic materials (excluding hazardous chemicals); sales of synthetic materials; sales of lime and gypsum; ferroalloy smelting; coal washing; manufacturing of coal products; wholesale of hardware products; hardware products Retail; new material technology research and development. (Except for projects that require approval according to law, business activities can be carried out independently with a business license in accordance with the law) Licensed projects: production of hazardous chemicals; operation of hazardous chemicals; storage of hazardous chemicals. (Projects that require approval according to law can only be carried out with the approval of relevant departments. Specific business projects shall be subject to the approval documents or licenses of relevant departments)