Gongyi Gas uses the portable telemetry laser methane detector produced by Hanhai Opto-electronic for the company's daily inspection of natural gas pipelines. The instrument has a long detection distance, which meets the company's detection requirements for equipment such as natural gas pipelines, pressure regulating stations, and home meters in different occasions, especially for areas that could not be detected before. The pipeline leakage can be accurately detected, found in time, and quickly and accurately positioned. It has provided great help to eliminate hidden dangers of pipeline leakage and repaired, and provided a reliable guarantee for the company to strengthen the operational safety of the natural gas pipeline network.