On September 28, 2006, Shenzhen Municipal Technical Supervision Bureau of the expert group, respectively the application of special equipment safety management evaluation Yantian gas company, Nanshan gas branch company and Shennan the southern end of the gas storage and distribution station the use of special equipment and management were safety evaluation. Yantian gas branch received 929 points, Nanshan gas branch company scores 934, south head storage and distribution station score was 946 reached the "level safety quality standard enterprise standard. Smoothly through the cylinder filling licensing appraisal, made "gas filling registration certificate".