It is illegal to produce and sell masks privately. The act of producing masks privately is suspected of producing and selling sanitary equipment that does not meet standards. According to the criminal law, those who produce medical devices and medical and sanitary materials that do not meet national standards and industry standards for protecting human health are subject to a fixed-term imprisonment of not more than three years or criminal detention. In addition, a fine of twice as much as 50% of the sales amount will be imposed. Article 145 of the "Criminal Law of the People's Republic of China"

Produce medical devices and medical and sanitary materials that do not meet national standards and industry standards for protecting human health, or sell products that are knowingly not in compliance with Those who use national standards or industry standards to protect human health, such as medical devices or medical hygiene materials that seriously endanger human health, shall be sentenced to fixed-term imprisonment of not more than three years or criminal detention, and shall also be fined not less than 50% but not more than twice the sales amount; Whoever causes serious harm to health shall be sentenced to fixed-term imprisonment of not less than three years but not more than ten years, and shall also be fined not less than 50% but not more than twice the amount of sales; if the consequences are particularly serious, he shall be sentenced to fixed-term imprisonment of not less than ten years and not more than ten years, and shall also be fined not less than 50% but not more than twice the amount of sales. A fine of not less than 50% but not more than twice the amount or property confiscation may be imposed.