The one I've installed is without brand on it but it is with one year warranty and I got it very cheap as compared to the market price of those with brand. I got it at RM 800.00.
I got it from a friend and according to him, he got it from a "contract manufacturer" for brand like PIAA, Osram, etc. Therefore these bulbs my friend got from this "contract manufacturer" are without brand on it but is offering one year warranty.
I have checked few places and all of them are selling it at RM 1,600.00 to RM 1,800.00. These are brand names like PIAA, Osram, Philips, etc.
In my opinion, dun be so worried about getting fake or genuine in terms of bulbs. As long as they offer warranty, that will be good enough. Well... all bulbs are with "limited" life span.... so you will need to change it eventually. Quality are more or less the same. I would rather pay RM 800 for this than going for RM 1,800 for brand like PIAA, etc. Who knows, it could be the same manufacturer, just only that this is without "PIAA" brand on it (well this is what my friend told me). I bought it because of the price & warranty.
Will show it to you when we convoy to JB