Manufacturing of mechanical and electrical equipment; manufacturing of automobile parts and accessories; manufacturing of motorcycle parts; manufacturing of general equipment (excluding manufacturing of special equipment); manufacturing of instruments and meters; manufacturing of molds; manufacturing of plastic products; manufacturing of pneumatic power machinery and components; manufacturing of gas compression machinery; sales of pipeline transportation equipment; sales of hydraulic power machinery and components; sales of valves and cocks; and manufacturing of ordinary valves and cocks. Licensed projects: construction engineering design; construction engineering construction.