Bop, Blowout Preventer, Choke & Kill Manifold manufacturer / supplier in China, offering Reliable Heavy-Duty Choke Valve Psl4 Pr2 2-1/16 Inch Specifications, Reliable Heavy-Duty API 6A Choke Valve Psl4 Pr1 2-1/16 Inch, Production Safety System Valve with Integrated ESD Compatibility Feature and so on.