Product Name: Ya'an ranking black impervious Origin: United States
Material: PET transmission rate: 0% shading rate: 100%
UV: 99% Thickness: 3mil (1mil = 0.0254mm)
Features: import PET material, color uniformity, the surface is very smooth, feel good,
Life does not fade! Comes with glue, transparent film for darkroom
Photo Processing rooms, warehouses and other places do not need light.