Manufacturing, processing, sales, research and development: mechanical equipment and accessories, auto parts (excluding engine manufacturing and processing), motorcycle parts (excluding engine manufacturing and processing), electrical equipment and accessories; sales of mechanical molds, Wujijiaodian, metal materials, building materials (excluding hazardous chemicals), decorative materials (excluding hazardous chemicals), daily necessities; import and export of goods and technology. (Projects prohibited by laws and administrative regulations are not allowed to operate; projects that are subject to approval or permission according to laws and administrative regulations can only be operated after approval)