Use of Type 69 Gas Mask

Hello, there is a plug at the bottom of the canister. Just open the plug. I almost suffocated when I first used it. 69 gas mask wearing method:

When wearing a mask, you should close your eyes, pause breathing, quickly take out the mask, put your thumb into the mask, grasp the middle and lower headbands on both sides of the mask with your mother finger and forefinger, put your chin slightly forward on the chin of the mask, and then pull the helmet of the mask back evenly with your hands from bottom to top until the mask is close to your cheek and the five heads are tightened on your head. After wearing a mask, take a breath, open your eyes, and then check with each other whether you are wearing it correctly. If it is not properly worn, make appropriate adjustments. When using the mask in cold areas, a layer of open-cell foam plastic water-blocking pad with a thickness of about 6 mm can be attached across the nose of the mask to separate the eyes from the nose, so as to improve the brightness protection performance of the lens. If conditions permit, double lens method can also be used for protection. Source: www.dehsm.com/article-539.html.