Description:
Conforms to American NELSON N95 test standards.
Mini-fiber high electrostatic filter, filtration efficiency of dust & powder is over 95%.
Size: 17.5cmx9.5cm
Material: SBPP+Filter+SBPP
Weight: 20g+20g+27g
Color: Blue/Green/Yellow/Pink/White etc
Product Technique: ultrasonic machine-sewed, with tie on
Package: 50pcs/box, 2000pcs/carton