Last I heard, they were manufacturing in Germany and China. I think they're a German outfit.
I looked at and handled some of the German made ones - traditional hunting blades, mostly - some of them, particularly a skinner I remember in 440C - looked really nice.
I did not like their Chinese folders or fixed blades. Obviously no surprise there.
One thing I noted - their Chinese blades do NOT say "China" anywhere on them. Whereas the German made ones ARE etched or tang-stamped "Germany".
But I really do not know a whole lot about Linder.