排名	国家/地区	数量	占比
1	China	334	67.1%
2	United States	85	17.1%
3	Japan	33	6.6%
4	Singapore	13	2.6%
5	Germany	9	1.8%
6	Hong Kong	3	0.6%
7	India	2	0.4%
8	Iran, Islamic Republic of	2	0.4%
9	Ireland	2	0.4%
10	Canada	2	0.4%
11	Mongolia	2	0.4%
12	Netherlands	2	0.4%
13	Slovenia	2	0.4%
14	South Africa	2	0.4%
15	Ukraine	2	0.4%
16	Slovakia	1	0.2%
17	Australia	1	0.2%
18	France	1	0.2%