1,Copper alloy 2,investment casting 3,ISO9001 certificated 4,OEM machining 5,Superior quality l Material :various kinds of brass, bronze and other copper , for example,CuZn39Pb2,CuSn7ZnPb,CuAl10Fe3,C37700,C84400,C83600,C94300,C95500,cUsN12Ni2, HPb59-1,HPb58-3 etc.. l Casting:Silica sol lost wax casting (precisio casting, investmeng casting), Sand casting etc..l Finish;anodize, polishing, sand ...