... offered 5.Powder metal parts Nantong Runfeng Powder Metallurgy Co., Ltd. is specializing in powder metallurgy,oil bearings,structural parts,gears(sprockets) and different parts used in ... ,helical gear,powder metallurgy gear,sleeve,copper sleeve,sleeve bearing, bushing, bush,pulley,timing pulley,structural parts,powder metal parts,nut,auto parts,sintered parts,rotor and ...