... resistance&hardness 3.High precision 4.Oem offered 5.Powder metal alloy part Nantong Runfeng Powder Metallurgy Co., Ltd. is specializing ... --vacuum oiling--packing3.material:steel,copper,steel copper,bronze,alloy.4.produce equipment:200T,100T,60T,25T,15T,10T, ... sleeve bearing, bushing, bush,pulley,timing pulley,structural parts,powder metal alloy part,nut,auto parts,sintered parts,rotor and stator etc. ...