I don't really mind the teasing. It just made me tease you back
... sorry if that bothered you.
Anyway, wow. Not familiar with that product at all. Solid poly... I can see where that would be really heavy!
Over here, we have several common versions of sandwich material with a poly center. Almost all are a foam of some sort with either mylar or aluminum foil. They're mostly used as an insulation layer, usually under some type of siding. The poly layer is mostly polystyrene, extruded polystyrene, or polyisocyanurate. Also seen a weird bubble wrap/ sheet metal stuff used for making ductwork but nothing like what you have. I'm jealous now.
If there was a lot of it and free, I might be tempted to use it for the outside of a hive body... by :
bonding XPS foam board to it (for an insulated hive) ... full facing on the side panels except for 3mm + foam thickness on each end for lap joint .... full facing on ends except for at the top to have clearance for where the frames hang (plus a bit to put some steel angle to protect the foam sheet where the frame hangs)
sides joined by steel angle on outside corners.
xps foam board, 1/2" ... almost 13mm ...
https://www.lowes.com/pd/GreenGuard-GreenGuard-LG-1-2-x-4-x8-XPS-Insulation-Board/5001939677