Basic classification and subdivision of masks

Masks can be divided into two categories: medical/non-medical. 

As the name implies, medical masks are mainly used for medical protection, which can be subdivided into three types: medical protection, medical surgery, and disposable medical; 

non-medical masks are also called personal protective masks, which can be subdivided into anti-accumulations according to their applicable scenarios. Particulate matter and daily protection. Masks for different purposes have different technical requirements and different scopes of application.