| Dec 31,
2017 | Dec 31,
2018 | Dec 31,
2019 | Dec 31,
2020 | Dec 31,
2021 | Dec 31,
2022 | Dec 31,
2023 |
|---|
| Net sales | 949 | 1,291 | 1,414 | 1,732 | 2,834 | 6,191 | 5,434 |
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| Cost of sales | 609 | 840 | 901 | 1,041 | 1,691 | 3,892 | 3,845 |
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| Gross profit (loss) | 340 | 451 | 513 | 691 | 1,143 | 2,299 | 1,588 |
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| Selling, general and administrative expenses | 169 | 205 | 259 | 346 | 677 | 1,126 | 1,278 |
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| Operating profit (loss) | 171 | 246 | 254 | 344 | 468 | 1,172 | 310 |
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| Interest income | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
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| Foreign exchange gains | 1 | - | - | 0 | - | 11 | 2 |
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| Rental income | - | - | - | - | 0 | - | 1 |
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| Interest on tax refund | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
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| Subsidy income | - | - | - | 0 | - | 1 | 0 |
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| Other | - | - | - | - | 0 | 0 | 0 |
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| Interest on tax refund | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
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| Non-operating income | 1 | 0 | 0 | 1 | 0 | 12 | 4 |
|---|
| Other | - | - | - | - | 0 | 0 | 0 |
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| Non-operating income | 1 | 0 | 0 | 1 | 0 | 12 | 4 |
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| Interest expenses | 1 | 0 | - | - | 1 | 8 | 8 |
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| Loss on investments in investment partnerships | - | - | - | - | - | - | 0 |
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| Non-operating expenses | 1 | 23 | 5 | - | 5 | 8 | 8 |
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| Foreign exchange losses | - | 8 | 5 | - | 3 | - | - |
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| Non-operating expenses | 1 | 23 | 5 | - | 5 | 8 | 8 |
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| Ordinary profit (loss) | 171 | 223 | 249 | 345 | 464 | 1,176 | 306 |
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| Gain on bargain purchase | - | - | - | - | - | 27 | - |
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| Extraordinary income | - | - | - | - | - | 27 | - |
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| Loss on valuation of investment securities | - | - | - | - | 15 | - | 30 |
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| Impairment losses | - | - | - | - | - | - | 237 |
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| Provision for contract loss | - | - | - | - | - | - | 51 |
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| Impairment losses | - | - | - | - | - | - | 237 |
|---|
| Extraordinary losses | - | - | - | - | 15 | - | 318 |
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| Provision for contract loss | - | - | - | - | - | - | 51 |
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| Extraordinary losses | - | - | - | - | 15 | - | 318 |
|---|
| Loss on valuation of investment securities | - | - | - | - | 15 | - | 30 |
|---|
| Impairment losses | - | - | - | - | - | - | 237 |
|---|
| Provision for contract loss | - | - | - | - | - | - | 51 |
|---|
| Impairment losses | - | - | - | - | - | - | 237 |
|---|
| Extraordinary losses | - | - | - | - | 15 | - | 318 |
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| Provision for contract loss | - | - | - | - | - | - | 51 |
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| Extraordinary losses | - | - | - | - | 15 | - | 318 |
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| Profit (loss) before income taxes | 171 | 223 | 249 | 345 | 449 | 1,204 | -12 |
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| Profit (loss) before income taxes | 171 | 223 | 249 | 345 | 449 | 1,204 | -12 |
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| Income taxes - current | 64 | 65 | 79 | 107 | 149 | 414 | 119 |
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| Income taxes - current | 64 | 65 | 79 | 107 | 149 | 414 | 119 |
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| Income taxes - deferred | -5 | 6 | -1 | -3 | -5 | -42 | -106 |
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| Income taxes - deferred | -5 | 6 | -1 | -3 | -5 | -42 | -106 |
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| Income taxes | 59 | 70 | 78 | 104 | 144 | 372 | 13 |
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| Income taxes | 59 | 70 | 78 | 104 | 144 | 372 | 13 |
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| Profit (loss) | 113 | 152 | 171 | 241 | 308 | 831 | -25 |
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| Profit (loss) | 113 | 152 | 171 | 241 | 308 | 831 | -25 |
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| Profit (loss) attributable to non-controlling interests | - | - | - | - | 2 | -20 | -58 |
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| Profit (loss) attributable to owners of parent | - | - | - | - | 307 | 852 | 33 |
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