2Z-3/8-1.2Z-6/8-1.2Z-10/7.ZW-3/7.ZW-6/7.ZW-10/8.ZW-10/10.ZW-0.9/7.ZW-1.5/7.2ZET-0.9/20.2ZET-1.5/20.2ZET-1.8/20.2ZET-3/20.柳二空活塞環.一級活塞環.一級導向環.二級活塞環.二級導向環
