General equipment manufacturing (excluding special equipment manufacturing); general parts manufacturing; mechanical parts and parts processing; mechanical parts and parts sales; electrical equipment manufacturing; generators and generator sets manufacturing; generators and generator sets sales; motor manufacturing; gas compression machinery manufacturing; casting machinery manufacturing; casting machinery sales; motorcycle parts manufacturing; motorcycles and Wholesale of spare parts; wholesale of auto parts; manufacturing of auto parts and accessories; manufacturing of plastic products; sales of plastic products; manufacturing of special ceramic products; sales of special ceramic products; manufacturing of sanitary ceramic products; manufacturing of daily ceramic products; sales of daily ceramic products; processing and manufacturing of building ceramic products; sales of sanitary ceramic products; sales of building materials; sales of daily necessities.