GPO-3 is a very good performance of the bakelite electrical insulation board, because it was so widely used, so that the counterfeiters will be more on-site market, there are too many fish mixed with GPO-3 insulation materials, although all Close to the GPO-3 label, but the performance is indeed a world of difference. Good anti static plastic sheet can be safe and efficient for us to use, you can fake and shoddy products but there are many security risks. Below the insulation material manufacturers teach you to identify the true and false GPO-3.
Method 1, genuine GPO-3 are required through the US safety laboratory certification (UL certification), with independent and unique UL identification code. So when you buy this kind of mica insulation tape GPO-3 must see if there is no UL identification code, or let the business to provide UL identification code.
Method 2, genuine GPO-3 its resistance to leakage index can reach 600V, you can test it, or let the business to provide indicators.
Method 3, authentic GPO-3 insulation material density is between 1.81-1.83, must be in accordance with national standards, the middle must be no filler, so be sure to see.