Legal analysis: this needs to be distinguished to see if the masks sold are medical masks. Have the qualification to operate Class II medical devices. If it is a medical mask for sale, it is illegal without business qualification. May be suspected of illegal business operations.

Legal basis: People's Republic of China (PRC) Criminal Law.

Article 225 Whoever, in violation of State regulations, commits one of the following illegal business operations and disrupts the market order, 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 the illegal income or confiscated property:

(a) operating franchise, special business projects or other restricted business projects as stipulated 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;

(3) illegally engaging in securities, futures or insurance business without the approval of the relevant competent department of the state;

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

Article 231 Where a unit commits the crimes specified in Articles 221 to 230 of this section, it shall be fined, and the persons who are directly in charge and other persons who are directly responsible shall be punished in accordance with the provisions of this section.