Wuxi, China, 2024
Dalian, China, 2023
Niedersachsen, Alemanha, 2023
Yancheng, China, 2016
Yancheng, China, 2016
Schorndorf, Alemanha, 2012
Nagold, Alemanha, 2010
Denkendorf, Alemanha, 2008
Taschkent, Uzbekistan