Nanjing Develop Advanced Manufacturing Co., Ltd. engages in the research and development, manufacture, and marketing of parts and components for oil and gas equipment. The company produces various components, including casing heads, tubing heads, spools, fracturing bump cylinders, BOPs, various pipeline valves, and others. Its products are used in a range of areas, such as surface wellhead, subsea, drilling, shale gas fracturing, high pressure fluid transportation, and other oil and gas fields. Nanjing Develop Advanced Manufacturing Co., Ltd. is based in Nanjing, China.