... hardness 3.High precision 4.Oem offered 5.Powder metal alloy part Nantong Runfeng Powder Metallurgy Co., Ltd. is ... --sintering--resizing--cleaning--vacuum oiling--packing3.material:steel,copper,steel copper,bronze,alloy.4.produce equipment:200T,100T,60T,25T,15T, ... metallurgy gear,sleeve,copper sleeve,sleeve bearing, bushing, bush,pulley,timing pulley,structural parts,powder metal alloy part,nut,auto ...