⒈ Smooth appearance with no obvious bubbles or cracks;
2. The color steel plate is closely matched, the section thickness is uniform, and the plate type is consistent with the steel plate;
3. No yellowing phenomenon after long-term use;
4. Good toughness, no cracking phenomenon when the roof is installed and nailed;
5. Complete specifications, according to different design supporting selection of different lighting rate of the light board;
6. The light is scattered through and the light is soft.
