Zhuhai CTC Electronic Co. is about to release their Walnut family of metal 3D printers, the first proprietary metal 3D printers made in China. Now that they are producing a line of high quality, industrial-grade selective laser melting (SLM)-based metal 3D printers CTC is likely to become the largest 3D printer manufacturer in China. Walnut 3D printers are capable of printing with stainless steel, die steel, cobalt-chromium alloy, nickel alloy, aluminium alloy and iron-base alloy materials, however both the software and the hardware is expandable so it can easily use new materials. You can read more over at 3DPrint.com: http://3dprint.com/127471/ctc-walnut-metal-3d-printer/