hongkong, Qingdao, Shandong, China,
Qingdao ZhiFeng Petroleum Equipment Co., LTD. is located in the beautiful city of Qingdao JiaoZhou Bay River, covers an area 23600 square meters. Company worker 106 people, including all kinds professional personnel 36 2 senior engineers, intermediate ...
petroleum equipment, valve assembly, piston assembly , float collar float shoe , mud pump valve seat , rigid centralizer , piston cup , cement head , casing accessories , piston assembly
