Manufacturing of metal cutting machine tools; manufacturing of metal cutting and welding equipment; sale of metal cutting machine tools; sale of metal cutting and welding equipment; mold manufacturing; mold sales; manufacturing of concrete structural components; sales of concrete structural components; manufacturing of metal structures; sales of metal structures; manufacturing of rubber products; sales of rubber products; processing of mechanical parts and components; sales of mechanical parts and components; manufacturing of plastic products; sales of plastic products; manufacturing of metal forming machine tools; sales of metal forming machine tools; manufacturing of CNC machine tools; sales of CNC machine tools; manufacturing of metal materials; sales of metal materials; manufacturing of building metal accessories; sales of building metal accessories; manufacturing of railway locomotive and vehicle parts; sales of railway locomotive and vehicle parts; manufacturing of high-speed rail equipment and accessories; sales of high-speed rail equipment and accessories; metal cutting processing services.