... density 2.good abrasion resistance&hardness 3.high precision 4.good strength 5.excellent components Nantong Runfeng Powder Metallurgy Co., Ltd. ... spread out all over the the country, and we supply components to Korea, America and japan. Our products are well ... ,sleeve bearing, bushing, bush,pulley,timing pulley,structural parts,components,powder metallurgy parts,nut,auto parts,rotor and stator etc. ...