Legal analysis: wechat selling masks is illegal behavior. Medical masks as a medical supply, belongs to the second class of medical devices. So the sale of medical masks not only need "business license", but also need "the second class of medical business record certificate". In the actual business process, the operator must also be able to provide the sale of masks of the purchase ticket, the supply unit (individual) qualification certificate and the product's certificate of conformity.
Legal basis: "Chinese People's *** and the State supervision and management of medical devices regulations" Article 20 engaged in the production of medical devices, should have the following conditions: (a) with the production of medical devices compatible with the production site, environmental conditions, production equipment, and professional and technical personnel; (b) there is the production of medical devices for quality inspection of the organization or full-time inspectors and inspection equipment; (c) there is a guarantee of medical equipment, medical equipment, and the production of medical equipment, and the production of medical equipment, and the production of medical equipment. (C) have to ensure that the quality of medical devices management system; (D) with the production of medical devices compatible with the after-sales service capacity; (E) product development, production process documentation requirements.