To identify the quality of a polycarbonate sheet, you can consider the following factors:
Price: While comparing quotations from different suppliers, if there is a significant price difference for the same specifications of polycarbonate sheet, it may indicate a difference in quality. However, keep in mind that the lowest price does not always guarantee the best quality.
Transparency: High-quality polycarbonate sheets made from 100% virgin raw material should have a transparency level of more than 92%. Look for sheets that have no visible impurities, pockmarks, or yellowing. Recycled or mixed material sheets may appear yellow or dark.