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IMPORTER KT5 🌸Talk should prepare yourself a mask to protect your health from disease and dust Especially washable for reuse is very economical offline Manufacturer: Việt Nam Country of Origin: Vietnam Standard: TCVN Material: Synthetic fiber Features: Anti-dust, bacteria Color: White Environment: Environment: Health, Clean rooms, Manufacturing industry, coal mining ... - Dust mask 3 layer filter. - High efficiency dust filter. - External aluminum clip for positioning mask - There is a foam layer inside. - Can be used many times Characteristics : - KT.5 mask includes 1 layer of synthetic fiber filter in the middle and 2 layers of outer fabric. - Filter area> 150 cm2. - Respiratory gap> 100 cm3. - The layer of soft, porous material in contact with the bridge of the nose and the outer aluminum clamp make the KT 5 mask cover the nose and mouth. - 2 elastic straps over the ears allow for easy wearing and removal. - The synthetic fiber filter plays a key role to prevent dust in the remaining space between the filter fibers due to the process of dust deposition due to weight; due to dust being retained when colliding with the filter during diffusion, inertial motion according to air flow or due to gravity. .