Collected 2 pcs of this foam from my office which came as a packing for a large UPS. its the same material which i saw in a sky surfer i think.
I checked it with Anabond glue. it CA friendly too.. What it is called ?? Pic attached.

High density thermocol

@AnjanBabu

Its HD for sure.. I mean to say whether its EPO, EPS or EPP !! it has mild synthetic type finish on it.

I have used HD foam in my last build which is not CA friendly but it is.

Defiantly not EPS if it is CA friendly ...

Put a drop of CA and give it a minute or two, to see if it made a hole.
Some of the HD foams take a while to get eaten.

Some of Computer parts come packed in EPP like large printers.

If you sure its CA friendly then it can be definitely EPP. However from the looks of it appears as only HD thermacole. I hope you are sure you used a thin CA not a foam friendly or thick CA. Thick CA takes very long to act on foam.

Tested with Cynobond, its working fine.
Ok.. now its really doesn't matter what kind of foam it is !! as long as i can make another plane with it..
Planning to make a clone of a Sky Surfer and a FT Flyer with this foam.