Sales of plastic products, packaging materials, hardware accessories, wires and cables, clothing accessories, chemical raw materials and products (excluding dangerous goods), and lubricants; manufacturing of plastic products; production and maintenance of molds; transportation of general goods on roads; processing of wooden boards and melamine boards; technology development, manufacturing, processing, and sales of auto parts, household appliances and their parts, motorcycle parts, intelligent equipment and their parts, and testing equipment. General items: manufacturing of hardware products; sales of metal accessories for construction; manufacturing of metal accessories for construction; sales of metal products; sales of building decoration materials; sales of building materials