GPO-3 is an excellent insulating material. It is because of this that it has been widely used. As a result, there will be more counterfeiters. There are too many GPO-3 insulating materials on the market. Although they are all labeled with GPO-3, their performance is quite different. Good insulating materials can be used safely and efficiently for us, but there are many potential safety hazards in fake and inferior products. The following insulating material manufacturer teaches you to distinguish the true from the false of GPO-3.

 

Method 1. The genuine GPO-3 is required to pass the U.S. Safety Laboratory Certification (UL certification), all with an independent and unique UL identification code. So when buying GPO-3 insulating material, we must see if there is UL identification code or let the merchant provide UL identification code.

 

Method 2. The leakage resistance index of the genuine GPO-3 can reach 600V. You can test it or let the merchant provide the index.

 

Method 3. The density of genuine GPO-3 insulating material is between 1.81 and 1.83. It must be in accordance with the national standard. There must be no filler in the middle, so we must see clearly.