Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 49
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482785/280-10-55-49

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-18

Name:	us-gaap_NumberOfOperatingSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Segment Information (Details)	12 Months Ended
Segment Information (Details)	Mar. 31, 2025	Mar. 31, 2024 USD ($)
Segment Information [Line Items]
Number of operating segments	2
Mechanical OEM [Member]
Segment Information [Line Items]
Recognized impairment loss		$ 145,000
Metal Stamping and Mechanical OEM [Member]
Segment Information [Line Items]
Recognized impairment loss		190,000
Hong Kong [Member]
Segment Information [Line Items]
Impairment loss of property, plant and equipment		106
China [Member]
Segment Information [Line Items]
Impairment loss of property, plant and equipment		$ 229