Individual customers accounting for at least 10% of net sales for the years ended December 31, 2015, 2016 and 2017 were as follows:
| For the years ended December 31, | ||||||||||||
| 2015 | 2016 | 2017 | ||||||||||
| NT$ | NT$ | NT$ | ||||||||||
| (In Thousands) | (In Thousands) | (In Thousands) | ||||||||||
|
Customer A from wafer fabrication segment |
$ | 7,449,485 | $ | 13,324,560 | $ | 15,632,722 | ||||||
|
Customer B from wafer fabrication segment |
20,761,648 | $ | 20,816,001 | 10,499,880 | ||||||||
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Total |
$ | 28,211,133 | $ | 34,140,561 | $ | 26,132,602 | ||||||
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