BTKOR KF94 Mask

• BTKOR medical grade four-layer KF94 adult mask made in Korea
• Printed with the words "medical external use" (의약외품) on the packaging
• The breathing space is more three-dimensional and comfortable than the general three-dimensional KF94
• Approved by the Korean government and specially used by medical personnel
• Certified by the Korean Food and Drug Administration and FDA
• The Korean Drug Administration recommends using