According to foreign media reports, the smartphone market due to strong demand for HDI boards, printed circuit board suppliers in Taiwan, including Yan Xing, China Yaohua through computers and electronics have improved HDI boards in the second quarter of 2014 production line capacity utilization.In addition, after South Korea HDI board production line was burned, Taiwan PCB manufacturers in March received more orders. Xin Xing, its HDI board production line utilization increased from less than 70% to 80-90%. Hua Tong currently HDI board capacity utilization exceeds 80%, while Unitech plans to further expand the production capacity of any layer HDI boards. Apple plans to launch new iphone in the second half of 2014, HDI board supply is expected until the end of the year will remain relatively tight.