I've never even heard of them. Post a link. First of al, go to the Forced Induction forum and look at the turbo FAQ/info threads.
Secondly, I believe I already told you this in one of your other threads but companies like Garrett, Mitsubishi, Greddy (they use Mitsubishi turbos), Edelbrock, Full-Race, Synapse, Turbonetics, etc. are reputable turbo and turbo kit companies.