How to Distinguish the Authenticity of GPO-3?

How to distinguish the authenticity of GPO-3? GPO-3 is an insulating material with excellent performance. Because of this, it is widely used. As a result, there are more counterfeiters. There are too many GPO-3 insulating materials on the market. It is labeled GPO-3, but its performance is quite different. Good insulation materials can be used safely and efficiently for us. There are many potential safety hazards that can be faked and shoddy products. The following manufacturers of insulation materials teach you to distinguish the authenticity of GPO-3.
GPO-3
Method 1 to distinguish the authenticity of GPO-3 :
Genuine GPO-3s need to be certified by the United States Security Laboratory (UL certification), and they all carry independent and unique UL identification codes. Therefore, when buying insulation materials such as GPO-3, be sure to check whether there is a UL identification code or let the merchant provide the UL identification code.
Method 2 to distinguish the authenticity of GPO-3 :
The authentic GPO-3 has a leakage resistance index of 600V. You can test it or let the merchant provide the indicator.
Method 3 to distinguish the authenticity of GPO-3 :
The density of genuine GPO-3 insulation material is between 1.81–1.83. It must be in accordance with national standards. There must be no filler in the middle, so it must be seen clearly.
GPO 3 board

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