The predecessor of Henan Puyang Zhongshi Group Co.,Ltd. was the 5th Machine Repairing Factory of Puyang Zhongyuan Oil field, Sinopec Corp. In 1997, after being restructured according to the modern corporate system and was named Puyang Zhongshi Group Co.,Ltd. Our leading products are pumping unit , wellhead (X-mas tree), tubing pump & sucker rod pump, cementing accessories, down-hole tools,casing centralizer, drilling solid control series,float collar, pressure vessel ,camping house and so on.