2016 Tokyo, Japan
2016 Kanagawa, Japan
2015 Tokyo, Japan
2015 Dessau, Germany
2013 Shandong, China
2013 Shanghai, China
2012 Jakarta, Indonesia
2012
2012 Maras, Peru
2011 Changzhou, China
2010 Tokyo, Japan
2010 Shiga, Japan
2010 Beijing, China
2009 Taipei, Taiwan
2009 Hyogo, Japan
2009 Kanagawa, Japan
2009 Okinawa, Japan
2008 Changzhou, China
2007 Tokyo, Japan
2006 Kyoto, Japan
2006 Tokyo, Japan
2006 Shanghai, China
2006 Wuxi, China
2005 Tokyo, Japan
2004 Nagano, Japan