UMC (United Microelectronics Corporation) plans to expand its 2016 capex (capital expenditure) to US$2.2 billion, up 22% from US$1.8 billion in 2015, as it anticipates to see more customers in production on 28nm process technology this year, reported the Economic Daily News on January 28. Last year, 28nm products represented 10% of the company's sales revenue—a three-fold growth from 2014. UMC said 95% of the capex will be spent on capacity expansion in 12-inch fabs in Taiwan and Xiamen while 5% in 8-inch fabs. While declining to forecast the percentage of 28nm products in its 2016 revenue, UMC pledged to ramp up 28nm capacity to around 30,000 wafers per month by the end of the year, of them 21,500 wafers will be made with the low power HKMG (high-k metal-gate) technology.