Cee:
which other ones are they wrong about ? and thanks for sharing the link!
Here are the ones I know of, there may be more:
Channelwell makes the SPs and TPIIs, the NeoHEs, Earthwatts and TPIIIs are Seasonic
Coolermaster- AcBel Polytech
Coolermaster do use AcBel, but also Enhance, Hipro and Seventeam
Enermax- ChannelWell, Topower, Topower, Wintech
These days Enermax is just, well, Enermax. They make their own.
ATNG according to Jonny, haven't checked these myself, though.
SuperFlower
Among others
Far from exclusive. The popular GameXStreams are FSP built, the new EvoSteams are 3Y
PC Power & Cooling- FSP Group
They never have. PC P&C once used Sparkle, but that was before they were bought out by FSP. Seasonic these days use Seasonic for the Silencers, Wintact for the TurboCools.
Leadman. Ultra don't make PSUs at all. Powmax did use a Youngyear unit at one time, at the same time Ultra did, which I suspect is where the confusion comes from.
Rosewill- ATNG (AP models), Youngyear (RE models)
And Wintech (1 Unit), and Skyhawk (Too many units).
And Etasis for most of the Zeus series
SuperFlower- Topower (same company)
SuperFlower make their own. I think it's been about 4 years since SuperFlower used Topower
According to Jonny, they make their own. I can't confirm that, though.
And HEC, and Channelwell (the Channelwell units are about the only ones worth buying

)
TTGI- Topower (older ones), Youngyear (newer ones)
SuperFlower
Channelwell predominantly, Enhance for the StablePower units. No FSP units
Zippy make their own units
There are most likely others, those are just off the top of my head. I don't have time to exhaustively check them all
Well one thing for sure if Wintech is the maker of Compusa units then Wintech is a JUNK maker I have gone thru those like bullets! Compusa has no problem replacing, but its with another junk that dies in 2 months! YUCK
Some Wintech, Some Skyhawk. If you still have it, post or trace the UL number to find out.