The middle layer of the mask is made of non-woven fabric, which is specially designed to prevent foaming. The middle layer of the mask can effectively block the moisture and moisture entering through the outer layer of the mask or generated by the wearer. < / P > < p > it is worth mentioning that the ear strap and nose bar of the snake folding mask can be adjusted. Each ear strap has an adjustable buckle, and the bridge of the nose can be bent to fit the shape of the nose, making it more comfortable to wear. < / P > < p > in addition, the mask can be cleaned and reused for 30 times, which is relatively practical. However, this requires users to wash by hand with soap, not washing machine. In terms of price, the price of the snake folding mask on the e-commerce platform is 199 yuan. Spontaneous combustion at a Guangzhou Motor vehicle intersection and other traffic lights in Shenzhen