v3.26.3
Schedule of allowance for credit loss of trade receivables (Details)
12 Months Ended
Sep. 30, 2025
USD ($)
Sep. 30, 2025
HKD ($)
Sep. 30, 2024
HKD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]      
(Reversal of provision) Provision for the year $ 306,180 $ 2,383,000 $ (3,158,000)
Trade Accounts Receivable [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Balance at beginning of the year   6,317,000 8,347,208
Retrospective adjustment upon adoption of ASC 326   1,027,792
(Reversal of provision) Provision for the year   2,473,000 (3,158,000)
Balance at end of the year   $ 8,790,000 $ 6,317,000