Shock absorber parts--piston, base valve, pistion rod guide , ... manufacturing items of metal powder metallurgy structure components spare parts for 20 years. We have exported our products ... ,Pinion ,Bevel Gear, Sprocket ,Helical Gear ,Double Gear;3.) Garden Tools parts,Mower parts,Clutch parts for Chain Saw;4.) Hardware Parts, Rachet Wrench;5 ... business relationship. Double Gears (Sinter metal parts)