General items of goods import and export: technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; automobile parts and accessories manufacturing; motorcycles and spare parts wholesale; motorcycle and spare parts retail; motorcycle parts manufacturing; automobile spare parts wholesale; railway rolling stock parts manufacturing; railway rolling stock parts sales; high-speed rail equipment and accessories manufacturing; new energy vehicle electrical accessories sales; general parts manufacturing; mold manufacturing; mold sales; fastener manufacturing; fastener sales; hardware product manufacturing