Repair of railway locomotives and rolling stock. General items: manufacturing of generators and generator sets; manufacturing of electric motors; manufacturing of transformers, rectifiers, and inductors; sales of railway locomotive and rolling stock parts; manufacturing of railway locomotive and rolling stock parts; sales of railway locomotives and rolling stock; manufacturing of power distribution switchgear equipment; sales of power distribution switchgear equipment; manufacturing of power facility equipment; sales of power facility equipment; sales of electrical equipment; repair of general equipment; repair of electrical equipment; sales of electrical equipment; sales of rail transit engineering machinery and parts; sales of generators and generator sets; manufacturing of high-speed rail equipment and parts; sales of high-speed rail equipment and parts; sales of wind farm related equipment; sales of used goods.