Sales were up 7.1% from November, however.
For the year, the company's sales totaled NT$427.7 billion ($12.9 billion), down 3% from 2007.
Compal's performance topped those of a pair of competitors. Acer saw sales drop 8.8% for the month to NT$25.2 million ($75.7 million). The figure is down 29% from November.
And Asustek reported revenues of NT$16.1 million ($48.4 million), down 20.3% year-over-year and 35% sequentially.