排名	国家/地区	数量	占比
1	China	438	59.8%
2	United States	144	19.6%
3	Ukraine	24	3.3%
4	Netherlands	18	2.5%
5	Japan	18	2.5%
6	Canada	15	2%
7	Bulgaria	11	1.5%
8	United Kingdom	10	1.4%
9	Germany	7	1%
10	Iran, Islamic Republic of	3	0.4%
11	Ireland	3	0.4%
12	Israel	3	0.4%
13	Finland	3	0.4%
14	South Africa	3	0.4%
15	Spain	2	0.3%
16	Taiwan	2	0.3%
17	New Zealand	2	0.3%
18	Philippines	2	0.3%
19	Romania	2	0.3%
20	Russia	2	0.3%
21	France	2	0.3%
22	Georgia	2	0.3%
23	Australia	2	0.3%
24	Italy	2	0.3%
25	Hong Kong	2	0.3%
26	Mongolia	1	0.1%
27	Bangladesh	1	0.1%
28	Brazil	1	0.1%
29	Denmark	1	0.1%
30	Senegal	1	0.1%
31	Singapore	1	0.1%
32	Portugal	1	0.1%
33	Nigeria	1	0.1%
34	Thailand	1	0.1%
35	Turkey	1	0.1%
36	Sweden	1	0.1%