... resistance&hardness 3.High precision 4.Good strength 5.Electric tool parts Nantong Runfeng Powder Metallurgy Co., Ltd. is ... 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,nut,auto parts,rotor and stator,sintered parts,electric tool part etc.