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v3.26.1

Consolidated statements of cash flows - HKD ($) | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Operating Activities |  |
Profit (loss) | $ 5,804,192 | $ 4,472,893
Adjustments to reconcile profit (loss) [abstract] |  |
Interest income | (26,835,314) | (31,280,591)
Finance costs | 59,409 | 148,491
Depreciation of property, plant and equipment | 1,198,520 | 1,671,269
Depreciation of right-of-use assets | 1,215,689 | 2,416,122
Amortization of intangible assets | 45,000 | 45,000
Gain on early termination of lease | 0 | (104,493)
(Gain) loss on disposal of property, plant and equipment | (31,062) | 160,966
Waiver of amount due to a related company | (3,591,998) | 0
Operating cash flows before movements in working capital | (22,135,564) | (22,470,343)
(Increase) decrease in inventories | (112,422) | 412,810
(Increase) decrease in trade and other receivables, deposits and prepayments | (2,027,040) | 3,577,216
Decrease in amounts due from related companies | 0 | 86,269
(Decrease) increase in trade and other payables and accruals | (1,414,833) | 1,055,806
Net cash used in operating activities | (25,689,859) | (17,338,242)
Investing Activities |  |
Interest received | 26,835,314 | 31,280,591
Purchases of property, plant and equipment | (3,237,154) | (606,296)
Placement of fixed bank deposits with more than three months to maturity when raised | (313,855,342) | (247,297,181)
Proceeds from disposal of property, plant and equipment | 31,062 | 0
Advance to related companies | (197,592) | 0
Net cash used in investing activities | (290,423,712) | (216,622,886)
Financing Activities |  |
Interest paid | (59,409) | (148,491)
Advance from a related company | 0 | 2,445,062
Repayment to a related company | (3,292,674) | (1,204,753)
Repayment of lease liabilities | (1,269,889) | (2,392,871)
Net cash used in financing activities | (4,621,972) | (1,301,053)
Net decrease in cash and cash equivalents | (320,735,543) | (235,262,181)
Effect of foreign exchange rate changes, net | (343,802) | 324,925
Cash and cash equivalents at beginning of the year | 382,110,455 | 617,047,711
Cash and cash equivalents at the end of the year, represented by cash and cash equivalents | $ 61,031,110 | $ 382,110,455

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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Adjustments For Increase (Decrease) In Trade And Other Receivables, Deposits And Prepayments + References No definition available. + Details
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Namespace Prefix: | pre_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Adjustments For Losses (Gains) On Disposal Of Lease + References No definition available. + Details
Name: | pre_AdjustmentsForLossesGainsOnDisposalOfLease
Namespace Prefix: | pre_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Payments For Purchase Of Short-Term Deposits + References No definition available. + Details
Name: | pre_PaymentsForPurchaseOfShortTermDeposits
Namespace Prefix: | pre_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration