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Consolidated Statements of Comprehensive Income $ in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 TWD ($) $ / shares | Dec. 31, 2019 USD ($) $ / shares | Dec. 31, 2018 TWD ($) $ / shares | Dec. 31, 2017 TWD ($) $ / shares
Statement [LineItems] |  |  |  |
Revenue | $ 20,337,881 | $ 679,969 | $ 18,480,027 | $ 17,940,855
Cost of revenue | (16,411,742) | (548,704) | (15,050,032) | (14,703,729)
Gross profit | 3,926,139 | 131,265 | 3,429,995 | 3,237,126
Research and development expenses | (1,007,631) | (33,689) | (939,269) | (985,873)
Sales and marketing expenses | (56,076) | (1,875) | (53,451) | (64,397)
General and administrative expenses | (498,241) | (16,658) | (485,068) | (639,809)
Other operating income (expenses), net | 92,928 | 3,107 | 147,514 | 692,834
Operating profit | 2,457,119 | 82,150 | 2,099,721 | 2,239,881
Finance costs | (180,262) | (6,027) | (190,248) | (217,283)
Share of loss of associates | (154,926) | (5,179) | (300,101) | (179,491)
Gain on disposal of investment in associates | 973,609 | 32,551 |  | 16,929
Other non-operating income (expenses), net | (73,287) | (2,450) | 173,070 | (327,620)
Profit before income tax | 3,022,253 | 101,045 | 1,782,442 | 1,532,416
Income tax expense | (513,679) | (17,174) | (456,618) | (550,487)
Profit from continuing operations | 2,508,574 | 83,871 | 1,325,824 | 981,929
Profit from discontinued operations |  |  |  | 1,814,953
Profit for the year | 2,508,574 | 83,871 | 1,325,824 | 2,796,882
Other comprehensive income (loss) that will be reclassified to profit or loss in subsequent periods: |  |  |  |
Exchange differences on translation of foreign operations | (104,198) | (3,484) | (51,077) | (232,652)
Share of other comprehensive income of associates that will be reclassified to profit or loss |  |  |  | 678
Net other comprehensive loss that will be reclassified to profit or loss in subsequent periods | (104,198) | (3,484) | (51,077) | (231,974)
Other comprehensive income (loss) that will not be reclassified to profit or loss in subsequent periods: |  |  |  |
Other comprehensive income (loss) on remeasurements of defined benefit plans | 20,916 | 699 | (59,961) | 50,838
Unrealized gain (loss) on valuation of equity instruments at fair value through other comprehensive income | (52,549) | (1,757) | 85,022 |
Share of other comprehensive loss of associates that will not be reclassified to profit or loss | 5,732 | 192 | (2,687) | (124)
Income tax effect that will not be reclassified to profit or loss | 2,833 | 95 | (4,126) | (8,642)
Net other comprehensive income (loss) that will not be reclassified to profit or loss in subsequent periods | (23,068) | (771) | 18,248 | 42,072
Other comprehensive loss for the year, net of income tax | (127,266) | (4,255) | (32,829) | (189,902)
Total comprehensive income (loss) | 2,381,308 | 79,616 | 1,292,995 | 2,606,980
Profit attributable to: |  |  |  |
Equity holders of the Company - Continuing operations | 2,508,574 | 83,871 | 1,325,824 | 981,929
Equity holders of the Company - Discontinued operations |  |  |  | 1,814,953
Profit for the year | 2,508,574 | 83,871 | 1,325,824 | 2,796,882
Total comprehensive income attributable to: |  |  |  |
Equity holders of the Company - Continuing operations | 2,381,308 | 79,616 | 1,292,995 | 1,079,672
Equity holders of the Company - Discontinued operations |  |  |  | 1,527,308
Total comprehensive income (loss) | $ 2,381,308 | $ 79,616 | $ 1,292,995 | $ 2,606,980
Ordinary shares [member] |  |  |  |
Basic earnings per share: |  |  |  |
Equity holders of the Company - Continuing operations | (per share) | $ 3.45 | $ 0.12 | $ 1.65 | $ 1.16
Equity holders of the Company - Discontinued operations | (per share) |  |  |  | 2.14
Equity holders of the Company | (per share) | 3.45 | 0.12 | 1.65 | 3.30
Diluted earnings per share: |  |  |  |
Equity holders of the Company - Continuing operations | (per share) | 3.40 | 0.11 | 1.63 | 1.13
Equity holders of the Company - Discontinued operations | (per share) |  |  |  | 2.10
Equity holders of the Company | (per share) | 3.40 | 0.11 | 1.63 | 3.23
American depositary share (each representing 20 common shares) [member] |  |  |  |
Basic earnings per share: |  |  |  |
Equity holders of the Company - Continuing operations | (per share) | 69.00 | 2.31 | 33.03 | 23.20
Equity holders of the Company - Discontinued operations | (per share) |  |  |  | 42.87
Equity holders of the Company | (per share) | 69.00 | 2.31 | 33.03 | 66.07
Diluted earnings per share: |  |  |  |
Equity holders of the Company - Continuing operations | (per share) | 68.06 | 2.28 | 32.59 | 22.68
Equity holders of the Company - Discontinued operations | (per share) |  |  |  | 41.93
Equity holders of the Company | (per share) | $ 68.06 | $ 2.28 | $ 32.59 | $ 64.61

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