Since the inception, BL has recognized that a rigorous quality management system is more important than machining equipment. BL Quality management system has been organized since the establishment. Also complete line of certificates and six patents have been honored base on our strictly respect for quality and “never stop” innovation. BL certificates and patents mainly include but not limited to : 

API 16A,  APIQ1,  ISO9001,  ISO14001,  OHSAS18001,  CNPC well control certificate,  CNPC first-class supplier certificate, six patents for BOP design.