v3.25.1
Segment information - Revenue net (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Segment information      
Revenues $ 10,073 $ 3,569 $ 3,875
Hong Kong      
Segment information      
Revenues 10,047 3,442 3,597
Australia      
Segment information      
Revenues   $ 127 $ 278
PRC      
Segment information      
Revenues $ 26