[ren0210989]

go to a print store and show them one of the obi's you've got and they can tell you what type of paper it is, it's gramature and everything.
it's very easy to tell when you're a printer + why not tell them to print it for you?
but you'll have to print more then 1 obi, because it's not profitable for them to print just 1 obi in the original quality, you'll have to print more of them. don't worry you can put just 2 of them on a A4 paper, and print it once. but make sure it's digital printing that's the only way you can actually print it for this quantity (and no it's NOT the same as your home printer, you can't compare the quality of digital printing with the laser or ink-jet printer, beleave me, i'm a printer).

anyways i hope this helps^^