... ,stainless steel,brass,copper,aluminum,zinc etc2.Casting(sand casting,investment casting,lost wax casting,die casting etc),forging,machining3.Full quality contral system4. ... bronze, aluminum, zinc etc2sandgreen sand, sodium silicate sand etc3mahinelathe, CNC, drilling machine, milling machine, boring machine, planting machine, machining center4processsand casting, investment casting, lost wax casting ...