Qingzhou Petroleum Machinery Factory Co., Ltd. Is built in 1966 taking up 200, 000 square meters building area. The manufacturing history has been more than 30 years since we developed the first drilling mud pump possessing independent intellectual property. The company has achieved a grand total of more than 20 government awards at all levels, among which we got excellent production award of national economic committee early in 1988, third prize of scientific and technological progress awarded by national science and technology committee early in 1989, and we are awarded provincial advanced enterprise by shandong government. Our technology-oriented company always improves innovation capability, having acquired four national patents, 28 utility model patents, and passed API monogram certificate and ISO9001 quality system certification. With our major series more than twenty varieties and annul output of 600 mud pumps, the products can widely meet the requirements of drilling, well workover, cementing, water shut-off and water flooding and other activities in petroleum and geological industry. We have a successful experience of 30 years specializing in manufacturing drilling mud pumps. The domestic market share of the products has reached to 50% covering each oilfield in China, with accumulative output of 4000 sets. Our mud pumps have been exported to all oil-producing countries including north America, Russia Mexico, Turkey, rumania and India, etc. We are also the first class supplier of China national petroleum corporation and China petroleum and chemical corporation.