... steel, cast iron, grey iron,ductile iron,carbon steel.stainless steel,brassC:We has its own QC team .all products need 3 ... check before packing (to avoid any possible neglect).all products must be ensured to above standards adopted.we can ... Central/South America· Asia· Western Europe· Australia 1MaterialDuctile cast iron,Grey cast iron2SandGreen sand,sodium silicate sand 3MachineLathe,CNC,Drilling ...