Yu Qin Sun

Jinzhou Xinjinhua Machinery Manufacturing Co., Ltd. engages in the manufacture of petrochemical equipment. It offers centrifugal compressor and auxiliary equipment; industrial turbo-machine and auxiliary equipment; and overhaul, spare parts repair and technical reform for operating compressor and steam turbine. The company was founded on May 30, 2005 and is headquartered in Jinzhou, China.

Xi'an Aohua Electronic Instrument Co., Ltd. engages in the research and development and manufactures of petroleum logging and testing instruments. Its products include exploration of petroleum and testing, digital signal controller single-core multi-function water flow logging tools, Schlumberger's water flow log neutron oxygen activated water flow logging tools, pulsed neutron full-spectrum saturation well logging tool, element logging tool, and high precision remaining oil saturation logging tools. The company was founded on March 1, 2001 and is headquartered in Xi'an, China.