Liaocheng Guotai Machinery Co.,Ltd is located in Liaocheng City,and a company that special manufacture spare parts for mud pump. Our main products are Liners,pistons,valves piston rods,extension rods,moudles(fluid ends) and other spare parts for mud pumps. Our products is strictly manufactured according to API-7KStandard and firstly passed the ISO9001-2008 international quality system .The products sold to most of China’s oilfields like Shengli Oilfield,Daqing Oilfield,Xinjiang Oilfield,Zhongyuan Oilfield etc. Meanwhile, the products also export to Russia,USA etc many Countries and Areas. Improvement could never stop, we are very confidence to be the No.1 of China Liners after ten years experience and supply quality products and service for customers domestic and abroad.