Cancellation requests must be directed to WORLDSymposium by sending an email to the Exhibits & Logistics Manager, Gudrun Echterhoff at gudrun@nullworldsymposia.org. The request must be in writing on Company letterhead, and must be signed by the same person who signed the Sponsorship or Exhibitor Application. If cancellation is made on or before November 15, 2023, the fees will be refunded less a 20% administrative fee. No refunds whatsoever will be made on cancellations after November 15, 2023.