实验室测试结果气流是符合标准要求的（一档170L/M，二档220L/M

According to the laboratory test results, the airflow meets the standard requirements (first gear 170L/M, second gear 220L/M. The standard requires the air volume to be within 160L/M to 220L/M). Our design is to evenly distribute the inlet air. The advantage of not focusing the wind on the face is that the face, especially the eyes, will not feel dry, especially in winter and spring. It should be considered as our advantage. The feeling that you wear a face mask is that the wind flows through the face very gently, which is very beneficial to human physiology.

实验室测试结果气流是符合标准要求的（一档170L/M，二档220L/M。标准要求风量在160L/M至220L/M之内），我们的设计是把进风均匀的分布了，没有把风集中吹到面部，这样的好处是面部特别是眼睛不会感觉干涩，尤其是冬、春季节。应该认为只是我们的优点，你带上面罩给人的感觉是风非常缓和的流过面部，对人的生理非常有利。

Laboratory test results show that the airflow meets the standard requirements (170L / m for the first gear and 220l / m for the second gear). According to the standard, the air volume should be between 160L / M and 220l / M). Our design is to evenly distribute the inlet air without concentrating the wind on the face. The advantage is that the face, especially the eyes, will not feel dry, especially in winter and spring. We should think that it is only our advantage. The feeling that you wear the mask is that the wind flows through the face very gently, which is very beneficial to human physiology.