Production of cleaning equipment, assembly equipment, and testing equipment for railway bearings; production of cleaning equipment, maintenance equipment, and testing equipment for railway locomotives and rolling stock; production of electromechanical equipment, testing instruments, and meters; production of electrostatic powder coating equipment (validity period subject to license). Technology development, technology transfer, and consulting services for electromechanical equipment (excluding automobiles), instruments and meters, coating equipment, and automation control equipment; sales.