DST Oiltools Co., Ltd is a leading manufacturer and supplier of drill stem testing (DST) tools for over 10 years. We mainly engages in DST tools for the annular pressure operated and full bore type and all supplied products are produced per API Spec. Our main products include various sizes of RTTS Packer, RTTS Safety Joint, Select Tester Valve, Drain Valve, LPR-N Valve, Omni Valve as well as Round Mandrel Slip Joint, Hydraulic Jar, Shock Absorber and other DST tools. We have advanced facilities and professional workers in this scope. During the past several years, our products have been widely exported to USA, UAE, Iran, Middle East, India, Pakistan, Indonesia and so on. We sincerely eager to establish cooperation with either end-users or dealers all over the world. And we believe our mutual cooperation will boost both our company?s development and the Oil and Gas Industry. Our success depends on your success and we have confidence to offer you qualified products with competitive prices and timely services in the most professional and efficient way to accomplish your targets.