NDT Branch belongs to T-ALL INSPECTION, started in 2002, NDT Branch provides drilling tool inspection, maintenance and evaluation, oil and gas site inspection, oil drilling and production equipment inspection, petrochemical equipment inspection, surface engineering inspection technology, offshore platform equipment and facilities safety inspection. It is the most competitive and largest oilfield NDT integrated service provider in China. It is the first third-party testing technology service provider in China to enter the international oilfield market and has international competitiveness.