The working principle of air filter masks, or filter masks for short, is to allow air containing harmful substances to filter through the filter material of the mask before being inhaled by people. The air-supplied mask refers to a clean air source isolated from harmful substances, which is sent to the face of a person through a tube and a face mask through a power action such as an air compressor, a compressed gas cylinder device, etc.

Regulatory departments regularly conduct random inspections of products in circulation in the market, which truly play a role in monitoring and guiding the healthy development of the industry. The hemodialysis conditions of surgical masks are particularly strict among the three types of masks.

Disposable medical masks can be simply understood as the more commonly used masks used in hospitals. It is hoped that the knowledge will be further popularized so that more health care workers, more users, and filter manufacturers can refer to it as well as conscientiously produce qualified coils and mask manufacturers. Therefore, their ideal appearance should be 'N95 mask type' folded or three-dimensional.

Medical protective masks; medical surgical masks ; disposable medical masks. It is related to the health of the people and the personal safety of health care workers.. For disposable medical masks, the filter material can meet the standard if the filter material reaches BFE95~99%; for medical surgical masks, the filter material needs to meet the hemodialysis index.

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