i am a little confused coz these things are being called by different names.
what i need is this


it is being sold in india as insuboard  as seen here


i need to make a wing core..
are the above two the same as blue styrofoam? can anyone confirm. coz ill be ordering online and i need to be sure b4 ordering
thanks.

They are same (XPS). Insuboard is manufactured by Supreme Petrochem, I had a couple of these boards long back.

great..
thanks for the clarification!

That's right.they are same.
Xps , insulation foam,insuboard  are the same