Def china based. I didn't notice the vendor logo when I was first there, I wonder if they recently added that "for our benifit". I think I would have noticed that.
Is there any way of knowing whether that's "the" DSE? Are they supposed to be a Hong Kong company? I only ask because much of the language sounds especially well written for a translation, so someone with a good language of American English seems to have had a hand in it; I don't think a lot of other languages use "if you're not into swapping out
batteries". It's not a bad thing; it may be a sign that it's so big that they've got their translations down pat.
And I also noticed that there are a couple other places out there calling themselves versions of DSE (dse901electronics, dse-905). The prices are good and the shipping is only $15 if you get under $200, which is great. But wondered if you new knew for sure whether this was the manufacturer DES or just someone appropriating their name.