... casting for gear 1.Material:GGG70 2.Sand casting 3,ISO9001:2008 Certificate Specifications1.Material:ductile cast iron 2.Process:sand casting ... as stainless steel,steel,iron,aluminum,brass by investment casting,die casting,sand casting or CNC machining. Standard: JIS, DIN, ASTM, ... facilities, such as the production line of investment casting introduced from Taiwan and spectrum analyzer device imported ...