The business scope includes production operation boxes, plastic drag chains, steel drag chains, steel aluminum drag chains, steel plate shields, organ protective covers, soft connections, spiral steel belt shields, machine tool guide rail scraper plates, plastic cooling pipes, machine tool pad iron, CNC machine tool chip removal machines, chain plates, chains, spiral springs, precision outer sheet metal parts of machine tools, CNC machine tool outer protection, screws, bolts, nuts, oil-water separators; Sales of steel, aluminum, hardware and electrical materials, standard parts, machine tool work lights, PVC boards, non-woven fabrics, and fiber fabrics. (Projects that require approval according to law can only be operated with the approval of relevant departments)