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

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- 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
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- Details
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