50 visiting now: 22 USA 
11 China 
8 Singapore 
4 France 
2 UK 
1 Iran 
1 Brazil 
1 Canada 
1 Taiwan 
1 Germany 
1 Belgium 
11 China 8 Singapore 4 France 2 UK 1 Iran 1 Brazil 1 Canada 1 Taiwan 1 Germany 1 Belgium