They make several different types. filtered and unfiltered.
I guess you got these..
http://www.ebay.co.uk/itm/MTEC-H9-65...item565130d522
No MTEC bulbs are E-Marked, so arent road legal. The ones above arent so blue that they attract attention, but dont seem to have great life. Around here the police have started doing checks on overly blue headlights and are making drivers remove them if not e-marked.