Manufacturing of metal fittings for construction; Sales of building materials; Wholesale of hardware products; Sales of metal products; Retail of hardware products; Sales of mechanical parts and spare parts; General mechanical equipment installation service; Mechanical equipment research and development; Sales of machinery and equipment; Sales of metal tools; Sales of CNC machine tools; Construction engineering machinery manufacturing; Machining of mechanical parts and parts; Sales of metal cutting machine tools; Hydraulic power machinery and components manufacturing; Manufacturing of metalworking machinery; Machine tool functional components and accessories manufacturing; CNC machine tool manufacturing; Manufacturing of metal cutting machine tools; Metal forming machine tool manufacturing; ;