东营方旭石油机械有限公司
Dongying Cenfirm Petroleum Machinery Equipment Co., Ltd. is a specialized company engaged in research, development, production and sales of MWD、cementing tools, centralizers, screen pipe and other down hole tools. The products have been sold to China's land and sea oil fields, and have been exported to Canada, the United States, Russia, Saudi Arabia, Iran and other countries.
Website：www.cenfirm.com