engine valve cotter 1.china direct factory 2.good quality 3.customer's drawing or samples is welcome 4.TS16949&ISO9001 we sell OEM/ODM valve keeper,valve seat,valve spring retainer , valve cotter, engine parts with cold extrusion, CNC maching etcour products are exported to South America, North America, West Europe, the middle East and other countries all over the world, we have the professional ...