How to identify the quality of round hole mesh

& The punching mesh manufacturer teaches you to judge the quality:
1. Look at the product surface
If the protective film is pasted flat and does not fall off, it means that the manufacturer attaches great importance to product packaging, and at the same time, it shows that the manufacturer attaches great importance to the plate production process Very seriously. (Attitude issue)
2. Look at the board itself
If the board itself has fewer particles or bubbles, it means that the raw material is recycled, but it is a relatively good recycled material. This board is a mid-grade board. If there are more or larger bubbles and particles, it means the raw material is poor and the board is a low-grade board. If there are no particles or very few particles, it is a very good quality board.
3. The "wonderful use" of white paper
Place a piece of white paper under the board to see the degree of yellowing of the board. If it is yellow, it means that the raw material is poor and not yellow, which means that the quality of the board is very good.