AST resins?

I have heard that there is a new stronger, lighter resin out there. Its called AST resins or something like that. My cousin said he felt one of the boards made with it and it was like lightest board he ever felt, he said he banged his knuckes to it and it didnt do a thing! Well if you know of anything about it your imput is greatly apprecated. thanks.

check this link http://www.astsurf.com/imagery/AST_Glassing_Info.pdf

thanks jason.