1. The true GPO-3 insulation sheet is certified by the US Safety Laboratory (UL), so it has an independent UL identification number. When purchasing this product, the manufacturer should be required to provide the UL identification number to distinguish authenticity.
2. The true GPO-3 sheet has a leakage resistance index of 600V.
3. The true GPO-3 sheet has a density between 1.81 and 1.83 according to international standards, without fillers, which determines the reliability and stability of the sheet.
