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Segment Information (Tables) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2021 | Dec. 31, 2020
Segment Reporting [Abstract] |  |
Schedule of assets and revenues major geographic regions |
|  | Three months ended June 30, |  | Six months ended June 30,
|  | 2020 |  | 2021 |  | 2020 |  | 2021
Geographic regions |  | Amount |  | % |  | Amount |  | % |  | Amount |  | % |  | Amount |  | %
PRC |  | 8,680 |  | 40 | % |  | 21,650 |  | 65 | % |  | 11,610 |  | 41 | % |  | 32,292 |  | 67 | %
India |  | 738 |  | 3 | % |  | 1,998 |  | 6 | % |  | 1,135 |  | 4 | % |  | 3,269 |  | 7 | %
Russia |  | 5,052 |  | 23 | % |  | 3,267 |  | 10 | % |  | 5,535 |  | 19 | % |  | 3,724 |  | 8 | %
Other countries |  | 332 |  | 2 | % |  | 2,169 |  | 6 | % |  | 407 |  | 1 | % |  | 2,283 |  | 5 | %
Asia & Pacific |  | 14,802 |  | 68 | % |  | 29,084 |  | 87 | % |  | 18,687 |  | 65 | % |  | 41,568 |  | 87 | %
United Kingdom |  | 1,212 |  | 6 | % |  | 3,508 |  | 11 | % |  | 3,504 |  | 12 | % |  | 5,212 |  | 10 | %
Netherlands |  | 4,187 |  | 19 | % |  | 2 |  | 0 | % |  | 4,192 |  | 15 | % |  | 22 |  | 0 | %
Other countries |  | 1,491 |  | 7 | % |  | 721 |  | 2 | % |  | 2,234 |  | 8 | % |  | 1,324 |  | 3 | %
Europe |  | 6,890 |  | 32 | % |  | 4,231 |  | 13 | % |  | 9,930 |  | 35 | % |  | 6,558 |  | 13 | %
Other |  | 6 |  | 0 | % |  | 57 |  | 0 | % |  | 30 |  | 0 | % |  | 184 |  | 0 | %
Total |  | 21,698 |  | 100 | % |  | 33,372 |  | 100 | % |  | 28,647 |  | 100 | % |  | 48,310 |  | 100 | %
|  | Year ended December 31,
Geographic regions |  | 2018 |  | 2019 |  | 2020
Amount |  | % |  | Amount |  | % |  | Amount |  | %
PRC |  | 146,235 |  | 84 | % |  | 49,346 |  | 64 | % |  | 66,160 |  | 62 | %
India |  | — |  | 0 | % |  | 4,988 |  | 7 | % |  | 8,570 |  | 8 | %
Russia |  | 10,869 |  | 6 | % |  | 3,673 |  | 5 | % |  | 5,671 |  | 5 | %
Other countries |  | 236 |  | 0 | % |  | 7,430 |  | 10 | % |  | 2,254 |  | 2 | %
Asia & Pacific |  | 157,340 |  | 90 | % |  | 65,437 |  | 86 | % |  | 82,655 |  | 77 | %
United Kingdom |  | 595 |  | 0 | % |  | 668 |  | 1 | % |  | 11,544 |  | 11 | %
Netherlands |  | 1,621 |  | 1 | % |  | 1,384 |  | 2 | % |  | 5,326 |  | 5 | %
Other countries |  | 14,352 |  | 9 | % |  | 8,627 |  | 11 | % |  | 7,444 |  | 7 | %
Europe |  | 16,568 |  | 10 | % |  | 10,679 |  | 14 | % |  | 24,314 |  | 23 | %
Other |  | 327 |  | 0 | % |  | 318 |  | 0 | % |  | 549 |  | 0 | %
Total |  | 174,235 |  | 100 | % |  | 76,434 |  | 100 | % |  | 107,518 |  | 100 | %
Schedule of long-lived assets geographic regions |
|  | December 31, 2020 |  | June 30, 2021
Geographic regions |  | Amount |  | % |  | Amount |  | %
PRC |  | 198,921 |  | 94 | % |  | 191,182 |  | 83 | %
Asia & Pacific |  | 198,921 |  | 94 | % |  | 191,182 |  | 83 | %
Germany |  | 12,747 |  | 6 | % |  | 21,462 |  | 9 | %
United Kingdom |  | 120 |  | 0 | % |  | 99 |  | 0 | %
Europe |  | 12,867 |  | 6 | % |  | 21,561 |  | 9 | %
United States |  | 230 |  | 0 | % |  | 18,930 |  | 8 | %
Total |  | 212,018 |  | 100 | % |  | 231,673 |  | 100 | %

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- Definition Tabular disclosure of long-lived assets, excluding financial instruments, long-term customer relationships of a financial institution, mortgage rights, deferred policy acquisition costs, and deferred tax assets, by geographic areas located in the entity's country of domicile and foreign countries in which the entity holds assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph b -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9038-108599 + Details
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