API 16A Annular Bop, Mud Gate Valve, Plug Valve manufacturer / supplier in China, offering API6a Cameron Choke Valve /Positive Chokes/Adjustable H2 Chokes, API Standard 2" Fig1502 Chiksan Swivel Joint, API 6A Surface Safety Valve (SSV) for Wellhead and Christmas Tree Petroleum Processing Equipment and so on.