Natural gas leakage can cause death by asphyxiation. The air that people rely on for survival, if the activity space is a closed space, can lead to suffocation, coma, serious will be life-threatening. 2, the main component of natural gas is alkanes, alkanes and a small amount of carbon dioxide, sulfur dioxide, its combustible component is alkanes, itself colorless and tasteless, will not poison people smell is sulfur dioxide. 3. Another hazard of natural gas is explosion. Usually, the air contains a few percent of natural gas, which will immediately explode when it encounters an open flame, endangering the safety of buildings and people. For gas, we provide ASD5300 detector and ASD5100 alarm controller to provide guarantee for Luanchuan Company.