... resistance&hardness 3.high precision 4.good strength 5.excellent OEM parts Nantong Runfeng Powder Metallurgy Co., Ltd. is specializing ... in powder metallurgy,oil bearings,structural parts,gears(sprockets) and different parts used in automobile and motorcycle.our company ... ,sleeve bearing, bushing, bush,pulley,timing pulley,structural parts,OEM parts,nut,auto parts,rotor and stator etc.