Licensed Projects: Professional construction work( Projects that require approval according to law, Business activities can only be carried out after approval from relevant departments, The specific business items are subject to the approval results.) General Projects: Import and export of goods, Technology import and export, Refractory production, Refractory sales, Graphite and carbon product manufacturing, Sales of graphite and carbon products, Non-metallic mineral product manufacturing, Sales of non-metallic minerals and products, Metal ore sales, mold manufacturing, mold sales, Mechanical parts、 Parts processing, Mechanical parts、 Parts Sales,Metal material manufacturing, Metal material sales,Chemical product sales( Does not contain permitted chemical products), Hardware wholesale, Hardware product retail, Non-ferrous metal alloy sales, Sales of coal and its products, General mechanical equipment installation services( Except for projects that require approval according to law, Carry out business activities independently in accordance with the law with a business license)