After a lot of googling I have found out that the OCZ powerstreams are actually made by Topower. Here is a review of a Topower 686P6. Looks awfully familiar to a OCZ powerstream eh?
Besides the OCZ powerstream, Topower also makes the Tagan/EPower/PCMCIS as well (review of a PCMCIS located here). Here is a overview of Topower's organization.
Just a FYI for you guys.