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Segment Information (Details) - Schedule of segment reporting information - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Mar. 31, 2021
Revenue from contracts with customers:      
Total revenue from contracts with customers $ 10,242 $ 12,365 $ 9,168
Operating (loss) income:      
Total operating income (loss) (477) 567 (616)
Depreciation expense:      
Total depreciation 209 162 159
Capital expenditure:      
Total capital expenditure 92 134 88
Total assets:      
Total assets 13,883 14,859  
Property, plant and equipment, net:      
Total property, plant and equipment, net 401 643  
Metal stamping and Mechanical OEM [Member]      
Revenue from contracts with customers:      
Total revenue from contracts with customers 6,654 7,213 5,192
Operating (loss) income:      
Total operating income (loss) (212) 339 (327)
Depreciation expense:      
Total depreciation 137 95 90
Capital expenditure:      
Total capital expenditure 60 78 50
Total assets:      
Total assets 8,099 7,784  
Property, plant and equipment, net:      
Total property, plant and equipment, net 266 380  
Electric OEM [Member]      
Revenue from contracts with customers:      
Total revenue from contracts with customers 3,588 5,152 3,976
Operating (loss) income:      
Total operating income (loss) (95) 307 (207)
Depreciation expense:      
Total depreciation 72 67 69
Capital expenditure:      
Total capital expenditure 32 56 38
Total assets:      
Total assets 5,696 6,961  
Property, plant and equipment, net:      
Total property, plant and equipment, net 135 263  
Corporate [Member]      
Operating (loss) income:      
Total operating income (loss) (170) (79) $ (82)
Total assets:      
Total assets $ 88 $ 114