San Francisco 49ers cloth Face Mask
According to the Ministry of Health, there are 4 types of masks, including: N95 medical mask or equivalent; medical masks; antibacterial drops, anti-bacterial masks (called masks 870 for short); 3, 4-layer masks (not eligible for medical equipment), other regular cloth masks.
These four types of masks have different usage principles.
Specifically, N95 or equivalent medical masks are only used for testing technicians, medical staff, direct contacts for examination, treatment and care of Covid-19 patients.
