breathing is a difference in south korea.

摘要

according to the invention is a breathing protection zone, as in previous winter for planar shape such as breathing is difficult, not easy to spray to wet breath, nose and mouth with the inconvenience, such a decline is not only to improve. for the sake of me the structure is complex, the cold washing cost or inconvenience, the defect, the design of the cold beam form a v shape groove, the side with the ability to work, to visit the three-dimensional shape made from it. a machine for processing.