排名	国家/地区	数量	占比
1	China	270	62.5%
2	United States	83	19.2%
3	Japan	33	7.6%
4	Singapore	13	3%
5	Germany	9	2.1%
6	Hong Kong	3	0.7%
7	India	2	0.5%
8	Iran, Islamic Republic of	2	0.5%
9	Ireland	2	0.5%
10	Canada	2	0.5%
11	Mongolia	2	0.5%
12	Netherlands	2	0.5%
13	Slovenia	2	0.5%
14	South Africa	2	0.5%
15	Ukraine	2	0.5%
16	Slovakia	1	0.2%
17	Australia	1	0.2%
18	France	1	0.2%