Oronasal mask (double-layer and triple-layer shell combination structure with brackets on the lower jaw of the inner shell)

Abstract

1. The name of the product of this design: Oronasal mask (a double-layer and triple-layer shell combination structure with a bracket on the lower jaw of the inner shell). 2. Purpose of the product with this design: This product is used to form the basic mask body of auxiliary smoke control devices and one-way epidemic prevention enhancement, sleep aid, and medical oral and nasal masks. 3. The design key point of this appearance design product lies in the combination of shape and pattern. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

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