1,certificate:ISO17799 2,P-type delivery valve 2,material:speed steel 3,OEM sevice and design service offered 1,certificate:ISO17799 ... 2,P-type delivery valve3,high quality and reasonable price4,OEM sevice design ervice offered5,material: ... speed steel and bearing steel we also have a series delivery valve 2 418 552 007OVE1592 418 ...