Most of the commercially available aluminum bags have the advantages of shading and low cost. However, the aluminum material easily dissolves metal substances when exposed to high temperatures. Even if it is coated with other insulating materials, it has the disadvantage that it cannot be recycled and reused. After incineration, it may discharge toxic air pollution. , So bravely gave up.
We decided to choose subtraction and innovate the mask with the simplest and most effective criteria