S2 casing centralizer made by CENTEK is used in oilfield cementation to save drilling time and costs. Puyang Zhongshi Group is a professional casing centralizers manufacturer with API 10D certificate. Restoring force of our single piece centralizer is 190% of that by API 10D at 67% stand-off ratio, much higher than API standard. Our centralizers have been exported to the USA, Russia, Canada, Colombia, Ecuador, Thailand, etc., and won favorable comments from our customers.