Sintered auto shock absorber parts Gears, pinion,sprocket, helical gears,valve, pistion,rod guide,rotors,sintered parts Ningbo Kingbell Powder Metallurgy Co., ... components, which have more than 1500 items, including structure parts which have complex shapes , high mechanical & physical ... for visiting. Our tenet: Supply the powder metallurgy parts with best quality ,good service and excellent credit. ...