Fiberglass Honeycomb Panel is a composite panel that is consisted of 3 layers, both top & bottom layers are single layer fiberglass sheets and then laminated to a hexagonal hollow aluminum honeycomb core by using two components PU glue.
Fiberglass sheet is also called FRP or GRP, meaning it's a glass fiber reinforced plastic. So FRP itself is a composite of fiberglass and resins, and we commonly use fiberglass honeycomb panels as backing panels for stone honeycomb panel, for table tops and also wall panels.