Daqing Oilfield Co., Ltd. Testing Technology Service Branch, established on 2000-04-28, Business scope includes and logging,Perforation,Research and development of geophysical technology related to wireline operations such as well testing,consult,Transfers and Services;Logging,well test,test,Design and construction of detection device,Logging,Detection and Calibration of Well Testing Instruments;Logging,well test,Manufacture of testing instrumentation and general instrumentation,Sales and Service,Research and development of computer application technology and software,road general cargo transportation.