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Loss per share (Tables) | 6 Months Ended
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Jun. 30, 2021
Loss per share |
Summary of basic and diluted net loss per share | Basic and diluted net loss per share for each of the period presented are calculated as follows:
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2021 |  |  | 2020 |  |  | 2021 |  |  | 2020 |
|  | $ |  |  | $ |  |  | $ |  |  | $ |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss attributable to ordinary shareholders |  |  | (163,324 | ) |  |  | (80,629 | ) |  |  | (396,234 | ) |  |  | (128,617 | )
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average number of ordinary shares- basic and diluted |  |  | 93,045,531 |  |  |  | 74,738,563 |  |  |  | 90,723,132 |  |  |  | 73,847,551 |
Product revenue - net |  |  | (1.76 | ) |  |  | (1.08 | ) |  |  | (4.37 | ) |  |  | (1.74 | )
Summary of anti-dilutive excluded from the calculation of diluted loss per share | As a result of the Group’s net loss for the six months ended June 30, 2021 and 2020, share options and non-vested restricted shares outstanding in the respective periods were excluded from the calculation of diluted loss per share as their inclusion would have been anti-dilutive.
|  | As of |
|  | June 30, 2021 |  |  | June 30, 2020 |
Share options |  |  | 8,629,440 |  |  |  | 9,808,561 |
Non-vested restricted shares |  |  | 632,535 |  |  |  | 710,068 |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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