XML 98 R83.htm IDEA: XBRL DOCUMENT v3.23.1
Property plant and equipment net (Details 1) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Depreciation charge $ 33 $ 38 $ 49
ZHEJIANG TIANLAN      
Depreciation charge $ 6,580 $ 6,466 $ 6,359