I hiaghly recommend Neventum services, I have worked with them a couple of times and they have the capacity to adapt their proposals to the needs you have for each event.
SYMA sees itself as innovative supplier of system solutions for the widest range of applications. Whether shop construction, POS, display, museum equipment, exhibitions or casings for machinery – each of these areas has its own system of rules.
Understanding these, and then developing coordinated solutions for them, is one of SYMA’s special strengths. It is based on the many years of experience and the sensitivity to understand individual customer needs, and to make them reality.