China National Logging Corporation (CNLC), a subsidiary of CNPC Services & Engineering Ltd., solely on behalf of CNPC providing well bore technical services in international market, is a specialized service company mainly engaged in: Wireline Logging, Mud Logging, Well Testing, Well Completion perforating and other relevant engineering services. Manufacturing wire-line logging, mud logging, well testing and perforating equipment. Geophysical and Geological research & development. Information consultation, and acting as an agent for petroleum exploration and development project.