They are not great. I had a USB-C adapter of theirs years ago. While the adapter itself worked pretty ok (besides only supporting 4k@30Hz), it was so badly shielded that it would reliably drop any Bluetooth or WiFi connection in its vicinity. I browsed through the Amazon reviews and it turned out that there were many people with the same issues (and also later USB-C adapters).
I know that USB-C can cause interference on Bluetooth/WiFi bands, but this was never an issue with properly shielded adapters.
I didn’t realize that they were just another one of those rebranding companies. I thought people ripped off Anker, rather than the competition and Anker pulling from some other common source.
FWIW I compared CE-Link and Anker's websites and at least the power bank and charging block sections didn't seem to be rebranded. Yes, they sell the same type of products, but the design (location of buttons, ports, etc) seems be different. I only took a quick look though so I could have missed more.
They have been using "Apple" style packaging (nice "unboxing experience" kind of boxes) and include slogans like "americas favorite charging brand" (the broken english on their website doesn't reassure me) on recent products I've bought from them, so they are certainly trying to make a brand for themselves as being above the standard junk you can find on Amazon, but I wouldn't be surprised if it was rebranded.
At that time, comments saying Anker was the best peripheral maker flooded the internet and made me feel like I was crazy.