What is the main cause of gas leakage?

The first gas hose is broken, and the gas leakage is easily caused by shedding.

The second kitchen gas pipeline is damaged, resulting in gas leakage.

The third gas meter is damaged, resulting in gas leakage.

The fourth gas ignition failed, resulting in a gas leak.

In the fifth pot, the liquid overflows and the flame is extinguished, causing the gas to leak.

Sixth forget to close the gas valve, leading to gas leakage.

The 7th gas valve interface is damaged, resulting in gas leakage.

The eighth gas stove is damaged, resulting in a leak explosion.

The ninth illicit gas pipeline, resulting in gas leakage.

The gas leak is caused by the violation of the gas company.