General Projects: Import and export of goods, Technology import and export, Refractory production, Refractory sales, Building materials sales, Sales of graphite and carbon products,Chemical product sales( Does not contain permitted chemical products), Metal material sales, Non-ferrous metal alloy sales, Metal ore sales, Sales of non-metallic minerals and products, Sales of metallurgical equipment, oven、 Furnace and electric furnace sales,Labor Services( Excluding labor dispatch)( Except for projects that require approval according to law, Carry out business activities independently in accordance with the law with a business license)