R&D, processing, sales and consulting services of bicycles, electric bicycles, electric motorcycles, off-highway recreational vehicles (except automobiles), sports equipment and their spare parts; sales and after-sales services of bicycles, electric bicycles, electric motorcycles and their spare parts; motor technology development, manufacturing and sale; metal surface treatment (except galvanizing); production and sale of toys and spare parts; bicycle maintenance; R&D, installation, commissioning, maintenance and technical services of public bicycle intelligent management systems; import and export of goods or technology (except for the import and export of goods and technologies prohibited by the state or involving administrative approval).