... &density 3.High precision 4.Oem offered 5.Sintered bronze bearing Nantong Runfeng Powder Metallurgy Co., Ltd. is specializing ... cleaning--vacuum oiling--packing3.material:steel,copper,steel copper,bronze,alloy.4.produce equipment:200T,100T,60T,25T,15T ... gear,spur gear,bevel gear,helical gear,Sintered bronze bearing,copper sleeve,sleeve bearing, bushing, bush,pulley,timing pulley,structural parts ...