Legal analysis: selling masks to make a difference is illegal, medical masks are medical devices, no business qualification is illegal business, the amount of money is generally not enough to crime, but can confiscate the illegal income and fine.
Legal basis: "Chinese People's *** and National Code"
961 intermediary contract is the intermediary to the principal to report to the opportunity to enter into a contract or to provide the medium of service to enter into a contract, the principal to pay the remuneration of the contract.
Article 962 An intermediary shall report truthfully to the principal on matters relating to the conclusion of the contract. If the intermediary intentionally conceals important facts related to the conclusion of the contract or provides false information to the detriment of the interests of the principal, he shall not request the payment of remuneration and shall be liable for compensation.