The gas mask is characterized in that the gas mask can cover and seal the head and face of an operator without affecting normal operation, so that the operator can not be eroded by harmful substance.
该面罩的特点是能罩住并闭封操作者头部、面部，而且不影响正常操作，使操作者不会受到有害物质的任何侵蚀。
The gas mask is characterized in that the gas mask can cover and seal the head and face of an operator without affecting normal operation, so that the operator can not be eroded by harmful substance.
该面罩的特点是能罩住并闭封操作者头部、面部，而且不影响正常操作，使操作者不会受到有害物质的任何侵蚀。
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