Sales: aluminum, aluminum alloy materials and aluminum products; aluminum surface treatment; manufacturing tools and dies, non-standard equipment; machinery, sheet metal processing aluminum alloy equipment and parts; sales: printing materials, metal materials, non-ferrous metals, non-ferrous metal alloys and their products, automobiles and their parts, motorcycles and their parts, electronic components, chemical raw materials (excluding chemical dangerous goods); import and export of goods, technology import and export, and the import business of machinery and equipment, spare parts and raw materials required by the enterprise, except for goods and technologies operated or imported and exported by state-restricted companies. (If the above business scope involves administrative licensing, it shall operate within the approved scope and period of the license. Those without a license or exceeding the approved scope and period of the license shall not operate.)