Research, development, processing, manufacturing, sales and technical consulting services of molded products and electromechanical products; self-operated and agent import and export of various commodities, except those restricted or prohibited by the state. General items: auto parts research and development; auto parts and accessories manufacturing; auto parts remanufacturing; auto parts wholesale; railway locomotive and rolling stock parts manufacturing; railway locomotive and rolling stock parts sales; high-speed rail equipment and parts manufacturing; high-speed rail equipment and parts sales; intelligent vehicle equipment manufacturing; intelligent vehicle equipment sales; mold manufacturing; mold sales; mechanical parts and components processing; mechanical parts and components sales.