Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services 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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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Property plant and equipment net (Details Narrative)	Dec. 31, 2023 USD ($)	Dec. 31, 2023 CNY (¥)	Dec. 31, 2022 USD ($)	Dec. 31, 2022 CNY (¥)
Net book value of Property, plant and equipment \| $	$ 168,000		$ 179,000
Property In Beijing, PRC Member
Net book value of Property, plant and equipment \| $	$ 80,000		$ 84,000
ZHEJIANG TIANLAN
Bank loans \| ¥		¥ 1,026,000		¥ 1,275,000
Net book value of Property, plant and equipment \| ¥		¥ 63,505,000		¥ 68,405,000