What is the disposable three-layer mask made of non-woven fabric?

What is the disposable three-layer mask made of non-woven fabric? The three-layer non-woven fabric mask is made up of two layers of fiber non-woven fabric specialized in medical and health, with one layer added in the middle to filter and prevent bacteria up to 99. More than 999% of the filtered spray cloth is formed by ultrasonic welding. The bridge of the nose is made of environmentally friendly all-plastic strips, does not contain any metal, is equipped with steam, and is comfortable. Filtering effect B. F. E up to 99. 9% is especially suitable for electronic factories, using soft and comfortable P. P. Material, does not irritate the skin to wear comfort. The design of the bridge of the nose can be adjusted most comfortably according to different face shapes. Using internal ultrasonic spot welding, the ear strap can be very firm and not easy to fall. It can be applied to electronic manufacturing, dust-free workshops, catering services, food processing, schools, riding locomotives, spraying processing, stamping hardware, health centers, hand processing industry, hospitals, beauty, pharmaceuticals, factories, environmental cleaning, public places and other uses, remarks: 1. Size: 9CMx17. 5 2.