• The 6th International Conference on the Biology, Chemistry, and Therapeutic Applications of Nitric Oxide (NO2010)
• 14th International Congress of Endocrinology (ICE2010)
• HCV2010 (17th International Meeting on Hepatitis C Virus and Related Viruses)
• World Congress of Psychiatry (WPA)
• 7th International Congress on AIDS in Asia and the Pacific（7th ICAAP）
• The 6th Congress of Asian Sleep Research Society
• International Congress of Neuroimmunology The 6th International Conference on the World Congress of Chronobiology
• The 2nd Sleep Summit of Asian Sleep Research and Sleep Medicine Meeting in Singapore (ASSM2014)
• International Conference of the World Federation of Occupational Therapist (WFOT2014)
• The 1st Asian Congress of Abdominal Radiology
• The 5th Asian Congress of Abdominal Radiology
• Nobel Prize 100 International Forum Commemorative the Centennial of the Nobel Prize
• The 9th International Symposium on Interventional Radiology & New Vascular Imaging Cooperated with the 34th Annual Meeting of the Japanese Society of Angiography & Interventional Radiology (ISIR & JSAIR 2005)
• 7th International Conference on Cryptococcus and Cryptococcosis (7th ICCC)
• The 6th International Conference on the Biology, Chemistry, and Therapeutic Applications of Nitric Oxide (NO2010)
• 17th International Workshop on Oxide Electronics (WOE17)
• 2nd International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma2010)
• IASGO 2011 (The 21st World Congress of the International Association of Surgeons, Gastroenterologists and Oncologists)

• IASGO 2011 (The 21st World Congress of the International Association of Surgeons, Gastroenterologists and Oncologists)
• Worldsleep2011 (The 6th International Congress of the World Sleep Federation)
• CORESTA (Cooperation Centre for Scientific Research Relative to Tobacco) Congress 2012
• The 17th Congress of the International Society for Experimental Microsurgery (ISEM2025)
• IFFS World Congress 2025
• XXV World Congress International Society for Heart Research (ISHR 2025 NARA)
• The 37^th International Symposium on Power Semiconductor Devices and ICs (2025)
• ICRP (International Commission on Radiological Protection) C4 and MC Meeting, and Joint Workshop of F-REI and ICRP
• STS-ASCVTS Aortic Summit 2024
• 8th APOTC 2024 Sapporo, Japan
• The 40th Asian Racing Conference SAPPORO 2024
• ICAPS2024 Tokyo Japan
• Yokohama Sport Conference 2020
• The 22nd International Battery, Hybrid and Fuel Cell Electric Vehicle Symposium and Exhibition (EVS22)
• Expo 2010 Shanghai China
• Tokyo Game Show TGS Forum
• FIFA World Cup Korea-Japan 2002 (Final Draw Japan Booth)
• Car Testing/Designing/Electronics China (Exhibition and Conference)