Anti-odor,Anti-flu; Anti-infection,Food Processing ,Medical TreatmentPrecise Chemical IndustrySafe, breathable, and hypoallergenic; and high filtration capacityElastic ear-hook with no pressure to the ears.
There are two types of lift-off and fixed type according to the type of base. Lift-off hinges includes lift-off nylon hinge with high wear resistance, corrosion-resistant