Product Performance: pp non-stick non-woven fabric, high-efficiency electrostatic melt-blown, ES heat-seal cotton non-woven fabric, pp non-stick non-woven fabric are adopted. Comfortable design based on the ergonomics of human face.The mask’s 3D shape is designed according to the ergonomics of the human face to ensure the tightness and increase the breathing capacity of the mask, greatly improve the air permeability and make it more comfortable to wear and breathe.Range of Application: Suitable for protection of PM2.5 haze particles, food, chemicals, coal dust, cement dust, metal smelting and processing manufacturing.How to Wear: Open the mask fully, position the mask with metal nose strip up. After wearing, use both hands to press the metal nose strip to fit the bridge of your nose and achieve a better protection effect.