Current location - Trademark Inquiry Complete Network - Trademark inquiry - How to tell whether the gas mask of Baddewei 6 102 is true or false?
How to tell whether the gas mask of Baddewei 6 102 is true or false?
Looking at the appearance, the regular mask looks straight and shiny.

Then look at the manufacturer, production date and shelf life. You can try it yourself. Turn off the kitchen, the oil in the pot is hot, stir-fry a dish or pour water directly, and the lampblack will come out at once. Wearing a mask, if it is not stuffy and odorless, is genuine; if it is not, it is fake.