On August 1, 2014, the Planning and Technology Department of the State Administration of Work Safety organized in Hefei the “Urban Natural Gas Pipeline Network Monitoring System Based on Distributed Passive Optical Fiber Gas Monitoring Technology, which was completed by Anhui Zhongke Hanhai Opto-electronic Technology Development Co., Ltd. "Science and Technology Achievement Appraisal Meeting.

The experts unanimously agreed to pass the appraisal and gave a high evaluation, believing that the overall level of the system has reached the domestic leading level, and some indicators have reached the international advanced level, and suggested speeding up the industrialization and increasing the intensity of promotion and application.