Manufacturing of other unlisted metal products. Pressings, welded components, electronic components, large bending parts, enclosures, cabinets, shells, auto parts, injection-molded parts, rubber parts, dust removal equipment and accessories, flat measuring tools, special wrenches, railway fittings, mold production, processing, and sales; machine tool maintenance; cast iron, cast aluminum, and cast steel products sales; mechanical processing; import and export of goods.