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...
But wearing a mask and frequent hand washing must be done at the same time, both are indispensable.
First of all, the words "medical surgical mask" must be written on the outside of the package.
A sudden epidemic has made masks a necessity, and the quality of masks has also become a hot spot of...