This mask is so thick, four layers, special material kill virus, use 7 days. we do not have CE, FDA certicicate at moment, preparing for it, we do registered as Chinese standard(At present export permission policy), Goverment support new patent. welcome to conact us(see the thickness). According the policy of the standard of mask for different country, this mask suitable to africa, middle east, asia some area of the world. Another side we can sell you this special material for your mask factory which could kill virus(here not mentioned just special for coronavirus). Tks, pls contact us feel free!