1\A high-quality medical grade ABS plastic manufacturing shell, ultrasound fusion process efficient, lightweight appearance, product quality has reached international advanced level
2\Three-tier U S imports of high-efficiency filter media, filtration efficiency> 99.9% of bacteria, viruses and other microorganisms in the respiratory and droplet
3 \has a good sealing, low respiratory airflow resistance and minimal dead space volume characteristics, to ensure the accuracy does not affect the pulmonary function test
4 \comprehensive protection for patients, the safety of operating personnel and equipment, the maximum to avoid the chance of cross infection