Saidchang small black and white masking force cardboard is a small size masking force cardboard used to test the opacity performance of coatings, inks, etc., which is used to test the opacity performance of coatings, inks, etcDesigned in accordance with the national standard GB1726-88,It can be placed in the oven and measures 142x105mm.
1. The reflectance value of white is 80±2, and the reflectance value of black is <1;
2. The paper is coated paper, and the surface is not laminated;
3. CompliantGB1726-88National standards.

