The company's main business: Sales of green composite materials for rail transit; Manufacturing of metal materials; Manufacturing of urban rail transit equipment; Non-ferrous metal casting; Ferrous metal casting; Manufacturing of mining machinery; Manufacturing of railway locomotive and vehicle parts; Manufacturing of high-speed rail equipment and parts; Manufacturing of automotive parts and accessories, installation services of ordinary mechanical equipment; Manufacturing of intelligent basic manufacturing equipment, sales of special equipment, key systems and components for rail transit (except for projects that require approval in accordance with the law, it conducts business activities independently in accordance with the law with the business license)