... in the large-scale welding, stamping, bending, punching, steel structure and all kinds of special-shaped pieces and processing ... 2. ISO9001:2008 certification. 3.Materials: 304 /301 stainless steel, or as per customers' request 4.Surface treatment: polished finish ... or seam welding,,metal assembly,CNC Laser cutting,punching, folding and bending, CNC machining,drilling,powder coating,pressing part, ...