... 3.high precision 4.good strength 5.powder metallurgy auto 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 ... bearing, bushing, bush,pulley,timing pulley,structural parts,components,powder metallurgy parts,nut,auto parts,rotor and stator etc.