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.