United Microelectronics Corporation reported unaudited sales results for the month and year to date ended December 2012. For the month, the company reported net sales were TWD 7,796,821,000 compared to TWD 8,104,902,000 for the same period a year ago.

For the year to date, the company reported net sales were TWD 105,998,159,000 compared to TWD 105,879,723,000 for the same period a year ago.