Well, not quite.
The FSP Group was founded in Taiwan in 1993, and FSP Group is now the 6th largest power supply vendor in the world. They were formed by seven power supply manufacturers.
But Sparkle is not merely "rebadged" FSP, and not "All" Sparkle units are rebadged.
FSP group makes power supplies for OCZ, Nexus, Salman, Yate Loon, Antec, and Sparkle. But Sparkle still makes a great number of their own power supplies. Even the UL numbers are different... but some Sparkles are indeed made for them by FSP. There are 89 power supply brands sold around the free world, and a good proportion of those are made by FSP.
We have been using Sparkle for 20 years with nary a failure. The UL numbers are different, and the corporate ID is different.
But FSP was a "Group" of 12 electronics and power supply manufacturers. Sparkle is not part of that group, according to their corporate paper work.
Most FSP power supplies are excellent, as are most Sparkles. Though there remain some low powered FSP power supplies that are still on the market that were made prior to the ATX 2.00 specifications. Those are being unloaded by some online retailers at low prices. They are not similr to Sparkle or to other FSP Group power supplies.
FSP even makes power supplies for the US PC Power and Cooling.