| 摘要 |
PURPOSE: Provided is a mask with a filter having through holes for air which collects even micro particles of dusts to make a user work safely. CONSTITUTION: The mask comprises: a base(10) having through holes at places for mouth and nose, which adheres on the face and covers nose and mouth of a user; a filter outside of the base to collect dust in the air coming through air holes; and a protective cover(14) which covers the filter.
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