API 16A Annular Bop, Mud Gate Valve, Plug Valve manufacturer / supplier in China, offering API 6A 2-1/16"15000psi Manual Adjustable Choke Valve for Choke Manifold, API Standard 2" Fig1502 Chiksan Swivel Joint, API 6A H2 Positive Oilfield Fig 1502 Adjustable Choke Valve and so on.