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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

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