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Prepayments and other current assets (Details) ¥ in Thousands, $ in Thousands | Dec. 31, 2022 USD ($) | Dec. 31, 2022 CNY (¥) | Dec. 31, 2021 USD ($) | Dec. 31, 2021 CNY (¥)
--- | --- | --- | --- | ---
Deposits paid | $ 255 |  | $ 243 |
Prepayments | 76 |  | 104 |
Other receivables | 152 |  | 222 |
Other tax recoverable | 3 |  | 3 |
Prepayments and other current assets | $ 486 |  | $ 572 |
ZHEJIANG TIANLAN |  |  |  |
Prepayments | ¥ |  | ¥ 12,547 |  | ¥ 22,717
Prepayments and other current assets | ¥ |  | 21,151 |  | 33,498
Deposits paid for bidding projects and temporary payments | ¥ |  | 6,004 |  | 7,030
Other current assets | ¥ |  | ¥ 2,600 |  | ¥ 3,751

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