Manufacturing of mining machinery; sales of mining machinery; installation services for general mechanical equipment; manufacturing of specialized equipment (excluding licensed specialized equipment manufacturing); sales of mechanical equipment; manufacturing of specialized machinery for building materials production; manufacturing of environmental protection specialized equipment; sales of environmental protection specialized equipment; manufacturing of specialized machinery for agriculture, forestry, animal husbandry, sideline fisheries; installation and maintenance of specialized machinery for agriculture, forestry, animal husbandry, sideline fisheries; mold manufacturing; mold sales; manufacturing of concrete structural components; sales of concrete structural components; manufacturing of metal structures; sales of metal structures; road freight transport of general cargo vehicles with a total mass of 4.5 tons or less (excluding network freight and dangerous goods); sales of building materials; sales of metal materials; sales of cement products; manufacturing of metallurgical specialized equipment; sales of metallurgical specialized equipment.