Mechanical processing, design and manufacturing of process equipment, molds, and non-standard machinery; sales of metal materials, electromechanical accessories, motorcycles, auto parts, Wujinjiaodian, building materials, and daily necessities; warehousing services; export of the enterprise’s self-produced containers and container spare parts, marine products and accessories (excluding export commodities unified and jointly operated by national organizations); import of raw and auxiliary materials, mechanical equipment, instruments, and spare parts required for the enterprise’s production and scientific research (excluding imported commodities operated by state-approved companies).