The C67ML runs Android 4.2 on a dual-core 1GHz CPU with 512MB RAM and 4GB internal storage. It has a 6" Pearl HD E-ink screen with frontlight and touchscreen, and it also has Wifi, audio, and a microSD card slot - just like the AfterGlow 2.
Just about the only way the specs for the C67ML differ from the AfterGlow 2 is that the latter lists a slightly faster CPU, comes with several apps which I would not want anyway, and explicitly mentions that it ships with Google Play. The AfterGlow 2 is listed as being about 40 grams lighter, and it comes with TTS software from Ivona.
Both devices run the same stock reading app on the same version of Android, and they come with a similar suite of apps. All in all, the two devices are similar enough that I would bet they are the same device, just with slightly different software. Oh, and one costs $40 less and comes with a case.
Needless to say, I think the model sold by Banggood.com is a good value. If I weren't already overloaded with review units, I would get one and play around with it.
The Boox C67ML is the third Onyx ereader to launch in the past month, and the second to launch and ship from China. For a market which I thought was on a downward turn, that is a rather fast launch rate.