United Microelectronics Corp. , the world's second-largest foundry, is meeting its expectations for a slowed ramp of 28nm process technology because of weak demand that's likely to persist until 2016 while the chip industry recovers from an inventory correction. Sales of products made with the company's most advanced technology node dropped to 10% of its NT$35.3 billion in revenue for the third quarter this year from 11% in the second quarter, according to UMC's announcement of quarterly financial results today.