That wood, "Chinese Mystery Wood" is a native Chinese wood. I forget what it's called, something like "quibui" or whatever, irregardless it is a bit on the soft side, very straight grained, has little character...similar to Beech...., but different. Best bet is to strip by sanding, then stain and do a tru-oil seal...or just paint or bedliner it. Some people have managed to do some pretty decent finishing jobs on it, and if you're lucky there wont be much wood filler.
Good luck,
Dan