This is the number of businesses, organizations and associations that have entrusted us with more than 180,000 attendees each year.
| CONGRESSES |
| WCN - World Congress of Nephrology | 9,000 delegates |
| ESMO - European Society Medical Oncology | 9,000 delegates |
| EAU - European Association of Urology | 9,000 delegates |
| PowerGen Europe | 8,500 delegates |
| ESH - European Society on Hypertension | 6,800 delegates |
| ESCMID - European Society of Clinical Microbiology and Infectious Diseases | 5,000 delegates |
| IADB - Inter-American Development Bank | 5,000 delegates |
| UNFCC - United Nations Framework Convention on Climate Change | 5,000 delegates |
| SIRM - Società Italiana di Radiologia Medica | 5,000 delegates |
| EASL - European Association for the Study of the Liver | 4,500 delegates |
| SMART - Simposio Mostra Anestesia, Rianimazione, Terapia Intensiva | 4,500 delegates |
| HFM - Heart Failure Meeting | 4,000 delegates |
| EWEA - European Wind Energy Association | 4,000 delegates |
| SOI - Società Oftalmologica Italiana | 4,000 delegates |
| ICOH - International Congress on Occupational Health | 4,000 delegates |
| ECTRIMS - European Committee for Treatment and Research in Multiple Sclerosis | 3,500 delegates |
| IST - Information Society of Technology | 3,200 delegates |
| ECR - European Consumer Response | 3,000 delegates |
| UIC - International Union of Railways | 3,000 delegates |
| SIR - Società Italiana di Reumatologia | 2,500 delegates |
| SCIVAC - Società Culturale Italiana Veterinari per Animali da Compagnia | 2,000 delegates |
| SIAARTI - Società Italiana di Anestesia, Analgesia, Rianimazione e Terapia Intensiva | 2,000 delegates |
| SID - Società Italiana di Diabetologia | 2,000 delegates |
| UIP - Unione Italiana per la Pneumologia | 2,000 delegates |
| SIMI - Società Italiana di Medicina Interna | 1,700 delegates |
| IFIP - International Federation for Information Processing | 1,500 delegates |
| SIU - Società Italiana di Urologia | 1,500 delegates |
| EuMA - European Microwave Association | 1,000 delegates |
| SIE - Società Italiana di Endocrinologia | 1,000 delegates |
| SIMEL - Società Italiana di Medicina di Laboratorio | 1,000 delegates |