SUZHOU DOUSON DRILLING& PRODUCTION EQUIPMENT CO., LTD. is a manufacturer of oil & gas drilling equipment and engineering valves for Petrochemical industry. Our company is established in October 2001. it composes of forging workshop, heat treatment workshop, CNC workshop and assembly workshop. In the workshops, there’re different types of CNC centers, painting line and modern inspection equipments. Our company which integrates research and development, manufacturing, sales and services is a modernized professional enterprise for manufacturing wellhead equipment, manifold and valves for domestic and overseas oil/gas , chemical and (nuclear) power fields. We have established many sales offices in domestic and overseas markets. Most of our products have been exported to overseas markets such as American, Spain,Britain, Australia, Canada and so on. Douson products are designed according to international and domestic standards such as API, ANSI, ASME, MSS, BS, DIN and GB with sizes from 1/2” to 36” and pressure from 150pounds to 15000pounds and with material such as WCB、WC6、WC9、LCB、LCC、 CF8(304)、CF8M(316) 、CF3(304L) 、CF3M(316l) 、CN7M 、A105、1020、1040、410、 4130、4140、17-4PH, inconel, titanium alloy, monel, etc. DOUSON has got a lot of R&D awards of science and technology and national patents; Got API 6D, API 6A, API 16A authentication. The top-class testing equipment and testing ability as well as the sound quality assurance system are the prior conditions to ensure the products to have remarkable quality. Douson has got ISO9001 authentication of International Standardization Organization, CE authentication of European Union and special equipment manufacturing license of China; and has obtained the network access qualification of PetroChina, CNOOC, Sinopec, etc.