Diamond dotted polyester film is the insulation material made by coating special modified epoxy resin on the electrical polyester film,and baked it to semi-cured state.
For the resin coating layer on the film is points but not a whole,the air and liquid can easy circulate in the passages between the resin coating,and this will minimize the damage of corona and partial discharge.
Diamond dotted polyester film can be used as layer insulation material in the insulation system of air or oil,and it mainly used as layer insulation or turn-to-turn insulation of six sulfur hexafluoride mutual inductor and transformer.

Main features of the Diamond Dotted Film

—Insulation class:E Class (120℃)
—Width: 1010mm
—Thickness:0.025mm-0.35mm
—Can be customized
—The diamond dotted paper has been approved by UL (NO.: E310670) ,ROHS and REACH test.

1.Q: Are you trading company or manufacturer ? 

A: We are a manufacturer, We have more than 36 years experience in producing electrical insulation material.

2.Q: Where is your factory located? How can I visit there? 

A: Our factory is located in Xuchang,Henan provience.

3.Q: Which certification do you have?

A: The plant has passed the certificate of ISO 9001 quality system certification;
The products have passed ROHS test.

4.Q: Can i get a samples for free?

A: Of course we can sent you a sample  for free, customers just need to pay a litter shipping change.

5.Q: How long is the delivery time?

A: Generally it is 5-15 days if polyimide film price is  in stock, or it is 15-30 days.