Also, when buying Chinese pens, or anything Chinese really, I would very strongly advise to check AliExpress first,
You must not have read the article carefully. ;) I've been ripped off by sellers on AliExpress four times and have vowed to never purchase another thing through that site.
I have, however, found a really nice reseller that (while a little more than AliExpress) is much better than Amazon, and very clearly labels their products. I have a review of some pens I purchased through them coming up.
And, I think the “no QC” thing is changing. A bunch of the Chinese companies that have gone into “luxury” products (like watches and leather goods) have started realizing that QC is a necessity. Doodle Bud (on YouTube) has mentioned that Asvine has actually reached out to him to get feed back on some of their engineering and QC issues.