Many reviews on 鶹.com mention that the “new version” isn’t as good as the first, but I have no issue with these bags (purchased July 2019).
The plastic is nice and thick, I have had no issues with the double zipper. They are a little fussy to get the bottoms open so they stand on their own, but it does work.
You do need to be careful when ripping off the sterile seal as it can rip the top where you record the date/amount.