Yancheng Ruide Petrochemical Machinery Co., Ltd. Our company established in the year of 2003 and locates at Jianhu County Jiangsu Province which is a center area for oil and gas machinery in China. Our company is a manufacturer specializing in well head and X-mas tree, BOP, casing head, casing spool, tubing spool, casing head hanger, tubing head hanger, gate valve, WKM expending valve, Mud gate valve, Choke valve, Ball valve, Flex well, plug valve and ball valve. Our products have exported to USA, Guba, Russia, Syria and India. Produced according API standard ISO standard. And we have certificate issued by API. And by ISO. So the products quality is reliable.