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Lease obligations (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)	Dec. 31, 2020 CNY (¥)	Dec. 31, 2019 USD ($)	Dec. 31, 2019 CNY (¥)
Operating lease cost | $	$ 257		$ 193
Short-term lease cost | $	64		153
Total lease cost | $	$ 321		$ 346
ZHEJIANG TIANLAN
Amortization of right-of-use assets | ¥		¥ 5,837		¥ 4,347
Interest on lease liabilities included under cost of revenue and selling and administrative expenses | ¥		1,244		2,214
Total lease cost | ¥		¥ 7,081		¥ 6,561

X

- Definition

Amount of interest expense on finance lease liability.

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Amount of amortization expense attributable to right-of-use asset from finance lease.

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Amount of lease cost recognized by lessee for lease contract.

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Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

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Amount of short-term lease cost, excluding expense for lease with term of one month or less.

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