Belong to a company. According to relevant inquiries, Tianjin Shenghe Aizhong Medical Technology Co., Ltd.'s "Medical Protective Mask (Tianjin Equipment Notification No. 20202140894)" belongs to the second category of medical devices. The product consists of a mask body, a nose clip, and a mask belt. Scope of application: This product is a one-time use, suitable for filtering particles in the air and blocking droplets, blood, body fluids, secretions, etc. in medical working environments. "Shenghe Aizhong/Lefan" is the trademark used on the packaging of this product.