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B5 Inventories | 12 Months Ended
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Dec. 31, 2020
Disclosure Of Inventories [Abstract] |
B5 Inventories |
B5 | Inventories
Inventories |  |  |  |  |  |  |  |
|  | 2020 |  |  | 2019 |
Raw materials, components, consumables |  |  |  |  |  |  |  |
and manufacturing work in progress |  |  | 9,510 |  |  |  | 8,209 |
Finished products |  |  | 8,709 |  |  |  | 8,742 |
Contract work in progress |  |  | 9,878 |  |  |  | 13,912 |
Inventories, net |  |  | 28,097 |  |  |  | 30,863 |
The amount of inventories recognized as expense and included in Cost of sales was SEK 61,647 (58,249) million. Contract work in progress consists of costs incurred to date on standard and customised solutions where the performance obligations are yet to be fully delivered. These costs will be recognized as cost of sales when the related revenue is recognized in the income statement. Reported amounts are net of obsolescence allowances of SEK 3,627 (3,386) million.
Movements in obsolescence allowances |  |  |  |  |  |  |
|  | 2020 |  | 2019 |  | 2018 |
Opening balance |  | 3,386 |  | 2,611 |  | 2,425 |
Additions, net |  | 2,266 |  | 2,228 |  | 1,079 |
Utilization |  | (1,781) |  | (1,459) |  | (987) |
Translation differences |  | (244) |  | 22 |  | 94 |
Balances regarding acquired/divested businesses |  | — |  | (16) |  | — |
Closing balance |  | 3,627 |  | 3,386 |  | 2,611 |

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