Please see the features at the below; S. Sangso KN95 masks CE certificate, FDA certificate, Australian TGA certificate, Execution standard: GB2626-2006 Filtration efficiency >= 95% Suitable for reducing steam odor. Protection against various dust and non-oily mists 10 times less than the occupational exposure limit during the processing of cotton, flour and other materials containing coal, iron ore and quartz mineral. Folding design: easier to carry and store Nose Clip: easy to adjust, increase the airtightness of the mask, thickened round corner design, easy to adjust, durable Ear loop design: increases comfort when putting on and taking off Filtering technology: applies outer filter layer technology â?¢ Anti-bacterial meltblown burning PASSED â?¢ Mask leak test PASSED â?¢ Specification: 40 pcs/pack (Each 2 pcs in a bag) â?¢ Made in China We have 500,000 pcs right now open for sale.� Package Price: 13,5 $ FOB - Free Zone Delivery