DEZHOU PETROLEUM MACHINERY FACTORY is a professional petroleum machinery manufacturer set up in 1970 . Our products cover drilling equipment and cementing tools like down hole motors, casing heads, water plugging pumps, christmas trees,fishing tools and other cementing and drilling tools. Our factory has obtained DNV ISO9001 and API certificates. Our products have been sold all the oilfields on land and offshore in China and exported to the US and many other countries.