The tang is like on all Fällknivens - practically full tang, concealed under the handle. No "made in" stamp, but Fällknivens are made in Japan.
The Thor is more than strong enough for chopping, and it does chop well by my standards.
The lamination lines are visible, but they're not always centered. The fit and finish on the Northern Lights series is far higher than in the regular line, but there are still occasional issues - the lamination lines may not be centered, and the grinds, at the tip in particular, may be uneven. If you intend to use the knife, then they probably won't be a problem (unless you get really unlucky and the grind/lamination is really screwed up, which can affect the performance, for example when the softer outer steel layer comes all the way to the cutting edge, but that's what the warranty is for), but if it's to be a collector's piece, then they may be an issue.
I like the Thor, although it is, perhaps, more expensive than it ought to be. For better bang for the buck, consider the A1 and A2.