| 摘要 |
PURPOSE: A noise prevention mask is provided, which can prevent generation of noise caused by respiratory in a place requiring calm. CONSTITUTION: A noise prevention mask comprises: a front surface(1); a connection part(3) located in the upper part and left and right parts of the front surface; a back surface(2) which is connected to the connection part and in which the lower part is connected to the front surface in the rear of the front surface; a contact unit(4) connected to the connection part; and a wearing part(5) which is connected to the contact unit and is hung on user's ear.
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