Region
China
China --
6
Taiwan
3
Taiwan --
3
United States
3
United States --
2
European Union countries --
1
European union countries
1
India
1
India --
1
Korea (North)
1
Korea (North) --
1
Korea (South)
1
Korea (South) --
1
Pakistan
1
Pakistan --
1
Russia (Federation)
1
Russia (Federation) --
1
United State --
1