1, villages and the old city due to a safe distance, with more constraints and other reasons, gas enterprises are difficult to find the construction land to build regular bottled gas supply station, illegal gas operators can seize market street,

2, illegal operators to Duanjinqueliang means and to lower sales price of gas enterprises, resulting in low and prices are flexible and false appearances.

3, users, especially migrant workers work safety awareness is not strong, not through the formal channels of information query,

4, individual gas operating companies to seek illegitimate interests, to provide gas source to the illegal gas operators.