Manufacturing and sales of railway locomotive and rolling stock parts, railway electronic and electrical products; repair of railway locomotive and rolling stock parts; technical consulting and technical services for railway locomotives and rolling stock; leasing of self-owned premises; sales of metal bellows, instruments and meters, electromechanical products, rubber and plastic products, and valves; engaging in import and export of goods and technologies. [Projects subject to approval according to law must be approved by relevant authorities before business operations may commence.]