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The 4 items of professional surgical masks with valve expiration and disposable medical protective masks respirator face masks are essential tools for preventing the spread of the coronavirus.

These masks provide a high level of protection against airborne particles, including droplets and aerosols that may contain the virus.

They are designed to filter out small particles and prevent them from entering the respiratory system, which can help reduce the risk of infection.

One of the key features of these masks is their valve design, which allows for easy breathing while wearing them.

This feature is particularly important for individuals who wear masks for extended periods of time or have difficulty breathing due to other health conditions.

The valves also help to prevent the accumulation of moisture in the mask, which can lead to discomfort and reduced effectiveness over time.

Another important aspect of these masks is their expiration date.

By regularly checking the expiration date, individuals can ensure that they are using fresh and effective masks.

This is especially important during times of high demand or when supplies are limited.

Overall, the 4 items of professional surgical masks with valve expiration and disposable medical protective masks respirator face masks represent a crucial tool in the fight against the coronavirus.

Their ability to filter out harmful particles and provide protection against airborne transmission make them an essential component of any public health strategy.