I can't speak to all machines but I have never seen a chamber vacuum machine that didn't use plain bags. The reason the snorkel type machines need special bags is that they suck air out of the bag; without special channels the bag would collapse. But chamber vacuum machines evacuate air from the entire chamber, then seal the bag. This means the whole chamber is under vacuum so the bag isn't disturbed. I have a similar chamber vac machine by ARY Vacmaster and it uses regular bags.
Let me stress that I'm in the US and have never seen that particular brand. But I'd be pretty sure it uses regular bags. Why not shoot them an email to confirm it? Better safe than sorry with an expensive purchase.