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Segment Information (Details) - Schedule of geographical segment - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2020
Revenue from contracts with customers:      
Total revenue from contracts with customers $ 12,365 $ 9,168 $ 12,558
Property, plant and equipment, net:      
Total property, plant and equipment, net 643 833  
Hong Kong and China [Member]      
Revenue from contracts with customers:      
Total revenue from contracts with customers 2,105 1,554 2,186
Property, plant and equipment, net:      
Total property, plant and equipment, net 128 98  
Europe [Member]      
Revenue from contracts with customers:      
Total revenue from contracts with customers 8,761 7,269 9,790
Other Asian countries [Member]      
Revenue from contracts with customers:      
Total revenue from contracts with customers 76 37
North America [Member]      
Revenue from contracts with customers:      
Total revenue from contracts with customers 1,423 308 $ 582
Myanmar [Member]      
Property, plant and equipment, net:      
Total property, plant and equipment, net $ 515 $ 735