... Prompt delivery time Certification: ISO9001:2008 Dongguan Precision OEM Metal Parts MaterialCarbon steel; Stainless steel, aluminum alloy; Brass alloy; ... grinding, chip formatting, rolling, stamping, deep drawing, bending, spot or seam welding, spinning, forging, sand casting, die casting, investment ... EDM, etc. And we also can offer 4 or 5 axis-CNC center processes.Sheet-metal workshopThe punching ...