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Schedule of detailed information about lease liabilities and short term leases (Details) | 12 Months Ended
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Dec. 31, 2024 USD ($) | Dec. 31, 2024 HKD ($) | Dec. 31, 2023 HKD ($)
Expense relating to short-term leases |  | $ 193,078 | $ 1,499,771 | $ 2,174,712
Variable lease payments not included in the measurement of lease liabilities |  | 34,992 | 271,808 | 591,527
Expense relating to leases of low-value assets, excluding shortterm leases of low value assets |  | 939 | 7,295 | (0)
Total cash outflow for leases | [1] | $ 7,202,491 | $ 56,257,499 | $ 56,745,464
[1] | Amount includes payments of principal and interest portion of lease liabilities and short-term leases.

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- Definition Exccluding of short term leases of right of use assets. + References No definition available. + Details
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Namespace Prefix: | MB_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Right of use assets of cash out flow for leases. + References No definition available. + Details
Name: | MB_RightofuseAssetsOfCashOutFlowForLeases
Namespace Prefix: | MB_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Right of use assets to short term leases. + References No definition available. + Details
Name: | MB_RightofuseAssetsToShortTermLeases
Namespace Prefix: | MB_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Variable lease payments not included measurement of lease liabilities. + References No definition available. + Details
Name: | MB_VariableleasePaymentsNotIncludedMeasurementOfLeaseLiabilities
Namespace Prefix: | MB_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration