@VyvyMets @RanuDhillon @CDCgov They would also have created a high filtration mask standard designed for use by the general public like KF94, with reliable non-counterfeit supply chains and including sized for kids.
@VyvyMets@RanuDhillon@CDCgov他们还将创建一个高过滤口罩标准，供KF94等普通公众使用，具有可靠的非假冒供应链，包括适合儿童使用的尺寸。