Legal analysis: from the administrative point of view, the industrial and commercial bureau and the gas company can jointly enforce the law; From a criminal point of view, the illegal operation of liquefied gas may be suspected of illegal operation, which constitutes a crime, and the public security organ may file a case for investigation.

The crime of illegal business operation refers to illegal business operation, which involves operating franchised, monopolized or other restricted goods without permission, buying and selling import and export licenses, import and export certificates of origin, business licenses or other approval documents stipulated by laws and administrative regulations, engaging in other illegal business activities, disrupting market order and having serious circumstances.

Subjectively, this crime is deliberately constituted and has the purpose of seeking illegal interests, which are the two main contents of this crime. If the actor buys and sells business licenses because he doesn't understand laws and regulations, he should not be punished as this crime, but should be investigated for administrative responsibility by the competent department.

Legal basis: Article 225 of the Criminal Law of People's Republic of China (PRC), in violation of state regulations, commits one of the following illegal business operations, disrupting market order, and if the circumstances are serious, shall be sentenced to fixed-term imprisonment of not more than five years or criminal detention, and shall also, or shall only, be fined not less than one time but not more than five times the illegal income; If the circumstances are especially serious, he shall be sentenced to fixed-term imprisonment of not less than five years, and shall also be fined not less than one time but not more than five times for illegal gains or confiscation of property:

(a) operating a franchise or monopoly commodity or other commodities whose operation is restricted by laws and administrative regulations without permission;

(2) buying and selling import and export licenses, import and export certificates of origin and other business licenses or approval documents stipulated by laws and administrative regulations;

(three) without the approval of the relevant competent departments of the state, illegally engaged in securities, futures, insurance business, or illegally engaged in fund payment and settlement business;

(four) other illegal business activities that seriously disrupt the market order.