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Property plant and equipment net (Details Narrative) - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Bank loans	$ 84,000	$ 88,000
ZHEJIANG TIANLAN
Bank loans	$ 1,275,000	$ 524,000

X

- Definition

Amount of short-term bank loan secured by broker-dealer customer's security.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher SEC
-Name Rule 15c3-1
-Number 240
-Section 15c3-1

+ Details

Name:	srt_BankLoans
Namespace Prefix:	srt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	srt_ConsolidatedEntitiesAxis=srt_SubsidiaryIssuerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: