fabric wholesale direct-Multip fabric layers improve cottons effacy in masks
The US National Institute of Standards and Technology (NIST) and a Smithsonian Institution institute recently studied how well some natural and synthetic fabrics filter particles sized similar to the COVID-19 virus▼★○◇. Multiple fabric layers may further improve cotton&rsquo•▷=◁■;s effectiveness◁▪▼•, it found●●. None of the materials▪●▲•, however◇▽, came close to the efficiency of N95 masks=•▷◇△.Of the […]
