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排名 | 国家/地区 | 数量 | 占比 |
1 | China | 280 | 77.3% |
2 | United States | 52 | 14.4% |
3 | Germany | 9 | 2.5% |
4 | Canada | 6 | 1.7% |
5 | Singapore | 5 | 1.4% |
6 | South Africa | 3 | 0.8% |
7 | Mongolia | 2 | 0.6% |
8 | Netherlands | 1 | 0.3% |
9 | Australia | 1 | 0.3% |
10 | India | 1 | 0.3% |
11 | Japan | 1 | 0.3% |
12 | Ukraine | 1 | 0.3% |
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