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v3.21.1

Consolidated Statements of Comprehensive Income $ in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 TWD ($) $ / shares | Dec. 31, 2020 USD ($) $ / shares | Dec. 31, 2019 TWD ($) $ / shares | Dec. 31, 2018 TWD ($) $ / shares
Statement [LineItems] |  |  |  |
Revenue | $ 23,011,381 | $ 819,493 | $ 20,337,881 | $ 18,480,027
Cost of revenue | (17,979,208) | (640,285) | (16,411,742) | (15,050,032)
Gross profit | 5,032,173 | 179,208 | 3,926,139 | 3,429,995
Sales and marketing expenses | (56,978) | (2,029) | (56,076) | (53,451)
General and administrative expenses | (528,759) | (18,830) | (498,241) | (485,068)
Research and development expenses | (1,015,512) | (36,165) | (1,007,631) | (939,269)
Other income (expenses), net | 135,578 | 4,828 | 92,928 | 147,514
Operating profit | 3,566,502 | 127,012 | 2,457,119 | 2,099,721
Interest income | 27,778 | 989 | 64,368 | 49,971
Other income | 21,157 | 753 | 10,759 | 8,390
Other gains and losses | (323,267) | (11,512) | (148,414) | 114,709
Finance costs | (171,482) | (6,107) | (180,262) | (190,248)
Share of loss of associates and joint ventures accounted for using equity method | (147,329) | (5,247) | (154,926) | (300,101)
Gain on disposal of investment accounted for using equity method |  |  | 973,609 |
Profit before income tax | 2,973,359 | 105,888 | 3,022,253 | 1,782,442
Income tax expense | (594,381) | (21,167) | (513,679) | (456,618)
Profit for the year | 2,378,978 | 84,721 | 2,508,574 | 1,325,824
Other comprehensive income (loss): |  |  |  |
(Loss) profit on remeasurements of defined benefit plans | (51,990) | (1,851) | 20,916 | (59,961)
Unrealized gain (loss) on valuation of equity instruments at fair value through other comprehensive income | 140,199 | 4,993 | (52,549) | 85,022
Share of other comprehensive (loss) income of associates and joint ventures accounted for using equity method that will not be reclassified to profit or loss | 23,143 | 824 | 5,732 | (2,687)
Income tax effect on components that will not be reclassified to profit or loss | (24,396) | (869) | 2,833 | (4,126)
Net other comprehensive income (loss) that will not be reclassified to profit or loss in subsequent periods | 86,956 | 3,097 | (23,068) | 18,248
Exchange differences on translation of foreign operations | 28,352 | 1,010 | (104,198) | (51,077)
Net other comprehensive (loss) income that will be reclassified to profit or loss in subsequent periods | 28,352 | 1,010 | (104,198) | (51,077)
Other comprehensive (loss) income for the year, net of income tax | 115,308 | 4,107 | (127,266) | (32,829)
Total comprehensive income for the year, net of income tax | $ 2,494,286 | $ 88,828 | $ 2,381,308 | $ 1,292,995
Ordinary shares [member] |  |  |  |
Other comprehensive income (loss): |  |  |  |
Earnings per share — basic | (per share) | $ 3.27 | $ 0.12 | $ 3.45 | $ 1.65
Earnings per share — diluted | (per share) | 3.23 | 0.11 | 3.40 | 1.63
American depositary share (each representing 20 common shares) [member] |  |  |  |
Other comprehensive income (loss): |  |  |  |
Earnings per share — basic | (per share) | 65.42 | 2.33 | 69.00 | 33.03
Earnings per share — diluted | (per share) | $ 64.57 | $ 2.30 | $ 68.06 | $ 32.59

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