New 9000
The surface layer is 32s gauze, the second layer is 23g KN95 filter material, the third layer is 20g hot air cotton, and the fourth layer is 60g hot air cotton; folded a total of eight layers.
Activated carbon thickening
The surface layer is 32s gauze, the second layer is activated carbon cloth, the third layer is 20g KN95 filter material, and the inner layer is 90g needle-punched cotton; a total of eight layers are folded.
2005
The surface layer is 40s gauze, the second layer is 45g hot air cotton, the third layer is 20g BFE99 filter material, and the inner layer is 25g spunbond.
New 2002-M
The surface layer is 40s gauze, the second layer is 30g KN95 filter material, the third layer is 80g hot air cotton, the fourth layer is 60g PP nonwoven fabric, the fifth layer is 60g hot air cotton, the inner layer is 40s gauze; a total of six layers.
New 9000-M
The surface layer is 60g PP nonwoven fabric, the second layer is 30g KN95 filter material, the third layer is 80g hot air cotton, the fourth layer is 20g hot air cotton, the fifth layer is 40g hot air cotton, the inner layer is 32s gauze; a total of six layers .
2001
The surface layer is 155g needle-punched cotton, the middle is 30g KN95 filter material, and the inner layer is 50g PP spunbond.