Internal sources (Internal Sources).Dust particles, as well as various contaminants (Contaminant) by many มักติ ed with people working within the room. Whether it is from the clothes, wear, shoes, hair, skin, or even breathing.Generally, the size of the dust? Try. Contamination and various small sector are starting 0.001 to hundreds of microns particles larger than 5 micron by many to be found by various surface and have the opportunity to fly in the air in ช่วงเวลาสั้น.
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