Ecuador

Cuenca

1993-4-20

Japan

Nishiyama 　

1995-10-29

Russia

Gomel

1997-6-19

ROK

 Wanju-gun

1999-4-22

Italy

 Lucca

2000-9-27

Russia

Kolpinsky District, Saint Petersburg

2003-09-08

Germany

Sassnitz

2007-06-09

Poland

Płock

2010-07-08

Russia

Magnitogorsk

2012-10-24

Canada

Oakville

2015-12-15