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Lease obligations (Details 1) ¥ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 USD ($) | Dec. 31, 2021 CNY (¥) | Dec. 31, 2020 USD ($) | Dec. 31, 2020 CNY (¥) | Dec. 31, 2019 USD ($)
Operating cash flows from operating leases | $ | $ 196,000 |  | $ 195,000 |  |
Right-of-use asset obtained in exchange for new operating lease obligations | $ | $ 0 |  | $ 0 |  | $ 460,000
ZHEJIANG TIANLAN |  |  |  |  |
Finance cash flows from finance leases | ¥ |  | ¥ 0 |  | ¥ 11,263 |
Right-of-use assets obtained in exchange for lease obligations (noncash): Finance leases | ¥ |  | ¥ 0 |  | ¥ 0 |

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