naihua is one of the chinese leading manufacturers of industrial steel valves.Our valves are supplied for a broad range of applications in the power generation, chemical and petrochemical, oil and gas, pulp and paper,mining, and ship-building industries. We concentrate on one business;designing, manufacturing and marketing advanced technology steel valves in a broad range of types and sizes. Our products include various types of valves in different materials.they are manufactured according to some internationally accepted standards such as API ,ANSI,DIN BS,AND JIS .