Production, processing and sales: automobile parts (excluding engines), motorcycle parts (excluding engines), general mechanical products and accessories; sales: building materials (excluding chemical dangerous goods), decorative materials (excluding chemical dangerous goods), waterproof materials, Wujinjiaodian, chemical products and raw materials (excluding chemical dangerous goods and precursor chemicals), plastic products, instruments and meters, steel, metal materials (excluding rare and precious metals). **[No business is allowed if operations are prohibited by laws and regulations; no operation is permitted before approval is required by laws and regulations]