v3.26.1
Other income and other net gains (Details) - HKD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Analysis of income and expense [abstract]    
Bank interest income $ 26,835,314 $ 31,280,591
Consultancy and management service income 468,000 468,000
Sales and marketing service income 420,916 240,716
Others 171,944 50,037
Total other income 27,896,174 32,039,344
Foreign exchange gain (loss), net 1,080,594 (2,489,614)
Gain (loss) on disposal of property, plant and equipment 31,062 (160,966)
Gain on lease modification 0 104,493
Waiver from amount due to a related company 3,591,998 0
Total other gains and losses, net $ 4,703,654 $ (2,546,087)