...For Hamer's Slammer DA3 Strat clones built around 1998?

I have one and, thought I'm absolutely sure it's not plywood, I'd love to know what it's made off. It's pretty light and not too hard (it has quite a few dinges, although it can be inpart due to the extremely thin finish)...

On Harmony Central, some people mentioned "alder" but I don't know...Any ideas?