All they need at this stage, at this show, is for people to hear about them, to become interested. Once they show up on enough radars the contracts will come. Even if they don't come at the very conference they'll come as soon as the product is certified and tested by a third party etc. Yes it would have been a bonus to have all the certifications in hand but the fact they don't won't be a major issue at all. And this is jut the first event they attend, there'll be many more. They just need to stop dragging their feet and get it finished.