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Financial instruments-Fair values and risk management - Group's exposure at the end of the reporting period to currency risk (Details) - USD ($) | Dec. 31, 2022 | Dec. 31, 2021
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United States of America, Dollars |  |
Disclosure of detailed information about financial instruments [line items] |  |
Increase in foreign exchange rates | 1.00% | 1.00%
(Decrease) in foreign exchange rates | (1.00%) | (1.00%)
Effect on profit after tax and retained profits, increase in foreign exchange rates | $ 63,061 | $ 67,269
Effect on profit after tax and retained profits, decrease in foreign exchange rates | $ (63,061) | $ (67,269)
China, Yuan Renminbi |  |
Disclosure of detailed information about financial instruments [line items] |  |
Increase in foreign exchange rates | 5.00% | 1.00%
(Decrease) in foreign exchange rates | (5.00%) | (1.00%)
Effect on profit after tax and retained profits, increase in foreign exchange rates | $ 48,298 | $ 13,468
Effect on profit after tax and retained profits, decrease in foreign exchange rates | (48,298) | (13,468)
Currency risk [member] | United States of America, Dollars |  |
Disclosure of detailed information about financial instruments [line items] |  |
Net exposure to currency risk | 7,551,223 | (8,027,547)
Currency risk [member] | United States of America, Dollars | Trade receivables [member] |  |
Disclosure of detailed information about financial instruments [line items] |  |
Net exposure to currency risk | 79,220 | 373,889
Currency risk [member] | United States of America, Dollars | Deposits And Prepayments |  |
Disclosure of detailed information about financial instruments [line items] |  |
Net exposure to currency risk | 2,972,471 | 3,899,656
Currency risk [member] | United States of America, Dollars | Cash and cash equivalents |  |
Disclosure of detailed information about financial instruments [line items] |  |
Net exposure to currency risk | 12,225,385 | 1,231,648
Currency risk [member] | United States of America, Dollars | Trade payables |  |
Disclosure of detailed information about financial instruments [line items] |  |
Net exposure to currency risk | (3,984,494) | (2,112,494)
Currency risk [member] | United States of America, Dollars | Accrued expenses and other current liabilities. |  |
Disclosure of detailed information about financial instruments [line items] |  |
Net exposure to currency risk | (3,741,359) | (11,420,246)
Currency risk [member] | China, Yuan Renminbi |  |
Disclosure of detailed information about financial instruments [line items] |  |
Net exposure to currency risk | (1,156,840) | (1,612,926)
Currency risk [member] | China, Yuan Renminbi | Deposits And Prepayments |  |
Disclosure of detailed information about financial instruments [line items] |  |
Net exposure to currency risk | 872,455 | 4,500,406
Currency risk [member] | China, Yuan Renminbi | Cash and cash equivalents |  |
Disclosure of detailed information about financial instruments [line items] |  |
Net exposure to currency risk | 14 | 14
Currency risk [member] | China, Yuan Renminbi | Trade payables |  |
Disclosure of detailed information about financial instruments [line items] |  |
Net exposure to currency risk | $ (2,029,309) | (6,113,239)
Currency risk [member] | China, Yuan Renminbi | Accrued expenses and other current liabilities. |  |
Disclosure of detailed information about financial instruments [line items] |  |
Net exposure to currency risk |  | $ (107)

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- Definition The amount that best represents the maximum exposure to credit risk without taking into account any collateral held or other credit enhancements (for example, netting agreements that do not qualify for offset in accordance with IAS 32). [Refer: Credit risk [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2022-03-24 -Paragraph 35K -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_35K_a&doctype=Standard -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2023-01-01 -Name IFRS -Number 7 -IssueDate 2022-03-24 -Paragraph 36 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_36_a&doctype=Standard&book=b -URIDate 2022-03-24 + Details
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