General projects: bearing manufacturing; bearing sales; bearing, gear and transmission component manufacturing; bearing, gear and transmission component sales; new material technology research and development; technical services, technology development, technical consultation, technology exchange, technology transfer, technology promotion; import and export of goods; technology import and export; import and export agency; production of bearing steel products; measurement technology services; testing machine manufacturing; information system integration services; housing leasing; machinery and equipment leasing; non-residential real estate leasing; transportation equipment leasing services