XuanLing Autoparts is a manufacturer in diesel engine parts.The products including Nozzle, Element, Rotor Head, Delivery Valves. As following is data for element ( plunger ).Raw material: GCr15 or 20CrMn; Processing Technique: Vacuumhardening, Match grinding, Mirror grinding Rigidity: HRC62-65 Engines: diesel-power truck, heavy truck BOSCH NO.STAMPING NO.2 418 455 1142455-1142 418 455 1222455- ...