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Land use right net (Details) - ZHEJIANG TIANLAN - CNY (¥) ¥ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Land use right, gross | ¥ 7,361 | ¥ 7,361
Less: accumulated amortization | (2,811) | (2,662)
Land use right, net | ¥ 4,550 | ¥ 4,699

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