The size depends on your wound.

Generally 15 stitches or more is regarded as dressing change for large wounds.

Will not use blood products.

Usually we use iodophor for disinfection.

And hydrogen peroxide or other potions.

We all use disposable dressing bags or sterilized dressing bags by one person.

As long as regular hospitals are carefully disinfected.

Will not be infected with infectious diseases.

The net clothes should refer to the materials.

It is a mesh material, which is beneficial to ventilation and prevents wound infection.