Manufacture of metal cutting and welding equipment; manufacture of special machinery for building materials production; sale of metal products; manufacture of metal structures; sale of metal materials; sale of metal tools; sale of mechanical equipment; sale of metal cutting and welding equipment; sale of metal forming machine tools; sale of plastic products; sale of rubber products; wholesale of hardware products; sale of building materials; goods import and export; road cargo transportation of general freight vehicles with a total mass of 4.5 tons or less (excluding network freight and dangerous goods). Licensed item: road cargo transportation (excluding dangerous goods).