motorcycle shock absorber parts--piston, base valve, pistion rod guide , are our mainly products exported. Our factory, Ningbo Kingbell Powder Metallurgy Co., Ltd., has specialized in manufacturing ... Designer, Manufacturer for Powder Metallurgy parts, Auto & Moto spare parts of following Items.1.) Types of Pistons, Foot Valves, Rod Guide for Shock Absorber,2.) Types of Gears / Pinion ...