As a rule, you will not get genuine brand-name cells from Chinese suppliers. They're either rejects, rebadges or bait-and-switches (where they sell you a couple genuine cells at first, and then when you buy a whole lot they're rebadges). Not because Chinese suppliers aren't to be trusted, they generally are, but because they generally can't get direct stock from US or Japanese suppliers at good prices. There are some import tariffs and protectionist things going on that make cells from China a lot more expensive than ones shipped directly from Japan to the EU.
So generally, you'll be better off buying at a reputable importer. NKON is (one of) the largest 18650 resellers in Europe and usually has good prices. Note that Norway is not in the EU, so you will possibly have to deal with import fees depending on what kind of treaties Norway has with the EU regarding lithium ion batteries.
So generally, you'll be better off buying at a reputable importer. NKON is (one of) the largest 18650 resellers in Europe and usually has good prices. Note that Norway is not in the EU, so you will possibly have to deal with import fees depending on what kind of treaties Norway has with the EU regarding lithium ion batteries.