Metal structure manufacturing; sales of forgings and powder metallurgy products; sales of high-performance non-ferrous metals and alloy materials; sales of chemical products (excluding licensed chemical products); sales of rubber products; sales of plastic products; sales of metal structures; road freight transportation of general cargo vehicles with a total mass of 4.5 tons or less (excluding online freight and dangerous goods); manufacturing of general parts; manufacturing of general equipment (excluding special equipment); machining and processing of mechanical parts and components; sales of mechanical parts and components.