Industrial Technology Research Institute
The park houses more than 400 high-tech companies, mainly involved in the semiconductor, computer, telecommunication, and optoelectronics industries, have been established in the park since the end of December 2003. Its 400 technology companies accounted for 10% of Taiwan's gross domestic product in 2007. It is home to the world's top two semiconductor foundries, Taiwan Semiconductor Manufacturing Company (TSMC) and United Microelectronics Corporation (UMC), both of which were established at the nearby Industrial Technology Research Institute. Taiwan is the only country that possesses a professional division-of-labor system in the semiconductor industry and also has the highest density of 12-inch wafer-producing fabs, most of which are based in the park.