** We strongly recommend to choose the delivery by a courier, as this is quicker and guarantees that you will receive the letter of invitation, while this guarantee is not given if the letter of invitation is sent by post mail. Courier Service is to be organised and paid by exhibitors/visitors themselves. Letters to be picked up at A. Sutter Dialog Services GmbH, Bottroper Str. 20, 45141 Essen, Germany.