In addition, wear a mask lower and don't completely cover your nose. Fogging is mainly because hot air comes out along your nose and returns to the camera. Pull the mask down. It's very effective.
Require low respiratory resistance, light weight, hygienic wearing and convenient maintenance. In this way, workers will be willing to wear them in the workplace and improve work efficiency. At present, foreign maintenance-free masks do not need to be cleaned or replaced, and they are discarded when the dust resistance is saturated or the mask is damaged, which not only ensures the hygiene of the mask, but also saves the time and energy for workers to maintain the mask. Moreover, many masks are arched, which can not only ensure a good fit with the face, but also reserve a certain space at the nose and mouth, making them comfortable to wear.