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Property, Plant and Equipment, Net (Details) - Schedule of property, plant and equipment, net - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
At cost:
Property, plant and equipment, at cost	$ 13,050	$ 13,110
Less: Accumulated depreciation and impairment	(12,407)	(12,277)
Property, plant and equipment, net	643	833
Machinery and equipment [Member]
At cost:
Property, plant and equipment, at cost	11,707	11,738
Furniture and fixtures [Member]
At cost:
Property, plant and equipment, at cost	89	91
Leasehold improvements [Member]
At cost:
Property, plant and equipment, at cost	1,086	1,114
Motor vehicles [Member]
At cost:
Property, plant and equipment, at cost	$ 168	$ 167

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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