The N95 respirator has a filtration efficiency of more than 95% for particles with an aerodynamic di...
N95 Respirator is one of the 9 kinds of particulate protection masks certified by NIOSH. "N" means n...
Wearing a mask is also very important. Do you know the correct way to wear a mask? Let me tell you. ...
Face masks have a certain filtering effect on the air entering the lungs.
The difference between ordinary medical masks and surgical masks is mainly from material and protect...
Shenzhen Zhongjing Environment technology co., LTD sincerely welcomes your inquire and we hope to co...