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Contract assets and liabilities (Tables) | 12 Months Ended
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Dec. 31, 2024
Contract assets and liabilities |
|  | 2024 |  |  | 2023 |
|  | US$’000 |  |  | US$’000 |
Unbilled revenue |  |  | 135 |  |  |  | 66 |
|  | 2024 |  |  | 2023 |
|  | US$’000 |  |  | US$’000 |
Deferred revenue |  |  | 593 |  |  |  | 650 |
|  | December 31, |
|  | 2024 |  |  | 2023 |
|  | US$’000 |  |  | US$’000 |
Contract assets |  |  | 135 |  |  |  | 66 |
Contract liabilities |  |  | (593 | ) |  |  | (650 | )
Net contract liabilities |  |  | (458 | ) |  |  | (584 | )
Net (liability) / asset position for contracts in process |
|  | 2024 |  |  | 2023 |
|  | US$’000 |  |  | US$’000 |
Costs incurred in contracts in process |  |  | 325 |  |  |  | 229 |
Revenue earned but not yet billed |  |  | 102 |  |  |  | 26 |
Less: billings to date |  |  | (885 | ) |  |  | (839 | )
|  |  | (458 | ) |  |  | (584 | )
|  | 2024 |  |  | 2023 |
|  | US$’000 |  |  | US$’000 |
Unbilled revenue |  |  | 135 |  |  |  | 66 |
Deferred revenue |  |  | (593 | ) |  |  | (650 | )
|  |  | (458 | ) |  |  | (584 | )
Disaggregated revenue from contracts |
|  | Year ended December 31, |
|  | 2024 |  |  | 2023 |  |  | 2022 |
|  | US$’000 |  |  | US$’000 |  |  | US$’000 |
Revenue |  |  |  |  |  |  |  |  |
Trading and manufacturing (revenue recognized at point in time) |  |  | 9,549 |  |  |  | 12,143 |  |  |  | 9,332 |
Engineering (revenue recognized over time) |  |  | 5,834 |  |  |  | 5,797 |  |  |  | 5,617 |
|  |  | 15,383 |  |  |  | 17,940 |  |  |  | 14,949 |
ZHEJIANG TIANLAN |
Contract assets and liabilities |
|  | 202 4 |  |  | 202 3 |
|  | RMB’000 |  |  | RMB’000 |
Unbilled revenue |  |  | 66,644 |  |  |  | 72,880 |
|  | 202 4 |  |  | 202 3 |
|  | RMB’000 |  |  | RMB’000 |
Deferred revenue |  |  | 35,367 |  |  |  | 43,452 |
|  | 202 4 |  |  | 202 3 |
|  | RMB’000 |  |  | RMB’000 |
Contract assets |  |  | 66,644 |  |  |  | 72,880 |
Contract liabilities |  |  | (35,367 | ) |  |  | (43,452 | )
Net contract assets |  |  | 31,277 |  |  |  | 29,428 |
|  | 202 4 |  |  | 202 3 |
|  | RMB’000 |  |  | RMB’000 |
Gross contract assets |  |  | 77,657 |  |  |  | 83,170 |
Less: allowance for doubtful accounts |  |  | (11,013 | ) |  |  | (10,290 | )
|  |  | 66,644 |  |  |  | 72,880 |
Net (liability) / asset position for contracts in process |
|  | 202 4 |  |  | 202 3 |
|  | RMB’000 |  |  | RMB’000 |
Costs and estimated earnings on uncompleted contracts |  |  | 48,274 |  |  |  | 239,648 |
Less: billings to date |  |  | (16,997 | ) |  |  | (210,220 | )
|  |  | 31,277 |  |  |  | 29,428 |

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-10 + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-5 + Details
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