過濾大小： 75nm（奈米）

材質：第一層：（最內層）遠紅外線石墨烯聚酯纖維布

：第二層：（中間層）：使用PTFE膜作為過濾（膜孔徑75奈米，新冠病毒80～120奈米）

： 第三層：（最外層）無氟環保防撥水奈米銀抗菌T/C布

★奈米有多大？ 一奈米等於百萬分之一公釐，也就是說，一奈米是十億分之一公尺

★一奈米大約是人類頭髮的十萬分之一。

包裝：單一包裝

Filter size: 75nm (nano)

The first layer: (innermost layer) Polyester fiber cloth with Far Infrared Graphene .

The second layer: (intermediate layer): PTFE membrane is used for filtration.

PTFE membrane hole aperture：75nm, COVID-19：80～120nm.

The third layer: (outermost layer)T/C cloth with Fluorine-free water-repellent nano Silver antibacterial.

Fabric Face Mask Vs Medical Mask: Who Should Wear What And Where

Fabric face mask vs medical mask: Medical masks should be worn

by healthcare workers and people who have COVID-19 symptoms,

while fabric face masks should be worn by people with no symptoms, says the WHO.