As one of the leading manufacturers of bearing cages in China,we are very glad to cooperate withyour company.Our products with high–precision and low-noise have enjoyed gratepopularity in Chinese market,such as deepgroove ball cages, taper roller retainers ,cylindrical roller retainers, thrust ball bearing cages ,Would you please send us any type drawing of the three types(52207,52209,51117),so that we could offer you a correct quotation.We are sure that our high quality products and superior service will satisfy your requirement.