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Inventories | 12 Months Ended
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Dec. 31, 2021
Inventories | 7 Inventories
|  | December 31, |
|  | 2021 |  |  | 2020 |
|  | US$’000 |  |  | US$’000 |
Raw materials |  |  | 89 |  |  |  | 63 |
Work in progress |  |  | 20 |  |  |  | 20 |
Finished goods |  |  | 438 |  |  |  | 259 |
|  |  | 547 |  |  |  | 342 |
Management continuously reviews obsolete and slow moving inventories and assesses the inventory valuation to determine if the write-down of inventories is deemed appropriate. For the years ended December 31, 2021, and 2020, write-down of inventories amounted to US$55,000 and US$13,000, respectively, which were charged to cost of revenue in consolidated statements of operations and comprehensive income / (loss).
ZHEJIANG TIANLAN |
Inventories | 7 Inventories
|  | December 31, |
|  | 2021 |  |  | 2020 |
|  | RMB’000 |  |  | RMB’000 |
Raw materials |  |  | 2,381 |  |  |  | 341 |
Finished goods |  |  | 1,005 |  |  |  | 2,048 |
|  |  | 3,386 |  |  |  | 2,389 |

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- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -URI https://asc.fasb.org/topic&trid=2126998 + Details
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