Wholesale, import and export, commission agency (excluding auctions) of electromechanical equipment, molds and their accessories, building materials (excluding steel and cement), industrial machinery automation accessories, metal materials (excluding steel, precious metals, and rare metals), plastic products, hardware and electrical equipment, and providing related supporting services; Research and development of mechanical equipment and molds, and transfer of self-developed achievements. (Not involving state-owned trade management goods; For quota and license management goods, applications shall be processed in accordance with relevant national regulations; For administrative licenses, operations shall be carried out with licenses)