United Microelectronics Corporation reported unaudited consolidated sales results for the month and year to date ended December 2017. For the month, the company reported revenues of TWD 10,667,683,000 against TWD 12,557,760,000 a year ago. For the year to date, the company reported revenues of TWD 149,284,706,000 against TWD 147,870,124,000 a year ago.