In terms of quality management, our products have been recognized by many customers at home and abroad, including: CNPC、SINOPEC、PPL、BP、AGIBA、TOTAL、OXY、PTTEP、PAM、LUKOIL、PDVSA、 KOC、TPAO、JO、ADNOC、Bapco Upstream、CCED、OQ、YANCHANG PETROLEUM、CNOOC、Sonatrach，etc.