Sales: steel, pig iron, iron concentrate powder, iron ore, coke, building materials (excluding dangerous goods), hardware products, daily necessities, clothing, shoes and hats, copper, aluminum, electronic products, chemical products, feed, ceramic products, instruments and meters, general and special equipment, rubber and plastic products, sports goods and equipment (excluding crossbows), edible agricultural products, needle textiles, stationery; Import and export of goods or technology (excluding goods and technology prohibited by the state or involving administrative approval); Trade consultation. (Projects that require approval according to law can only be operated after approval by relevant departments)