If a label do a re-release of a band is enough merit for adding their link in 'Labels', in the band's page??

Does the label's website have a page dedicated to the band (eg. www.label.com/bandname/)? If it doesn't, don't add it.

It's because Icarus Argentina has recently re-released ALL the Emperor's albums, some with bonus tracks, in these last months and I thought that would fit to add it in band's links, but then I prefered to ask first.

It is possible or not?

I am guessing that this is a local pressing and distribution, right? I doubt that all Emperor releases were out-of-print, or that Icarus acquired the worldwide rights to their discography.

To answer your question, I'd consider a re-release enough merit to adding a link when the label becomes the band's new "home", so to speak. This has been the case with some bands on Sentinel Steel and NWN Prod., for instance.

Yes, I thought so.
They re-edited all their releases, so as these last weeks also re-released Dimmu Borgir's "Enthrone Darkness Thriumphant" in digipack with bonus tracks. And also they sell them in their page, so I think it's relevant.
Now I will be adding it...

Ahh, I got the point; the label is just for the main one which made the contracts and comercial aspects with all the others.
So this label which made re-releases with autorization of Candlelight, or Nuclear Blast in case of Dimmu Borgir, must fit in the 'Official Merchandise' category...