Erm. HTC is actually the OEM (original equipment manufacturer) for many of the windows mobile phones, smartphones and PDAs out there being sold under other brands like O2, Dopod, etc.
For example, according to wiki, the HTC Magician is sold as the Qtek S100, O2 Xda II Mini (Asia), O2 Xda mini (Germany), T-Mobile MDA, i-mate JAM, Vodafone VPA Compact, Dopod 818, Krome Spy and Orange SPV M500.