Barter is the present and the future of international trade, especially for people who is starting in the import export business. Barter and more: Triangular operations.
5-layer non-woven fabric KN95 disposable protective mask, designed to provide more protection than standard disposable 3-layer masks
The mask is made of 5 layers of filters to provide extra protection. For general use only-not for medical use. Cannot replace gas masks and medical masks. If breathing is difficult or unstable, or unavailable during sleep
