Production and sales: automobile and motorcycle parts; mechanical equipment and parts; Wujinjiaodian products, plastic products; sales of automobiles (excluding cars) and motorcycles; sales: non-ferrous metal materials (excluding rare and precious metals), building materials (excluding paint); import and export of goods and technology (except for items prohibited by laws and administrative regulations; items restricted by laws and administrative regulations can only be operated after obtaining a license, except for special provisions by the state).