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These masks filter are intended to be used for protection against solids, such as, those form minerals, soal, fire smoke, iron ore, flour and certain other substances.
We can provide OEM service for all kinds of our such filters.
Pristine fabrics are made of very very tightly woven yarns -- woven so closely that dust mites and allergens cannot pass through. However, air and moisture vapor easily penetrate the fabric. If you're using Pristine covers over your old pillow, the dust mites and allergens stay inside.