International Fairs and similar "organisations" are trying to take money out of your pockets by trying to include you in a fake fair catalogue. The letter they send seems very real and they falsely use our name. Unfortunately, their terms and conditions state that you are stuck with a minimum of €1300/year for 3 years. Similarly, there is an email circulating for visitor lists from a certain Evettiz, this is a similar false pretense. Definitely do not pay and absolutely do not respond or communicate with it!
You can find more info on the site of the international organisation of fair organisers UFI: https://www.ufi.org/industry-resources/warning-construct-data/. There, too, they say: completely ignore.