Can I prevent the virus by wearing a multi-layer mask?

As far as medical masks are concerned, as long as qualified products are worn correctly, only one can achieve the expected protective effect. Multiple stacking can not increase the protective effect. The key indicator of mask protection is air tightness, just like: if the door is not closed tightly, the thicker door will not be anti-theft.

Hangzhou Demo Medical Technology Co., Ltd is a professional medical products designer, manufacturer and exporter in China. Ever since its foundation, DEMO MEDICAL has always strictly abided by the motto of Quality First and Reputation Supreme. Now DEMO MEDICAL is mainly engaged in the supplying of surgical dressings, Medical disposable products in class I, class II and class III, medical instruments and appliances.