We have many specialists, who have worked for many years in the petroleum machinery industry and accumulated much experience in the design, manufacture, inspection and testing, marketing and service of the petroleum machinery. We have all kinds of process equipments for the cold-working and heat-working, as well as complete inspection and testing facilities. We design and manufacture the Christmas trees, casing heads, choke and kill manifolds, drilling mud manifolds, high-and-middle pressure valves, and components for oil drilling and production in accordance with API standards, ANSI standards, GB national standards and SY industry standards. Our products are widely used in the petroleum, chemical, metallurgy and power station industries.