DAEDUCK ELECTRONICS CO., LTD. is a Korea-based company engaged in the manufacturing of printed circuit boards (PCBs). The Company produces package substrates, which are used for three-dimensional (3D) packages for mobile applications, basebands, digital signal processing and others; high density interconnects (HDIs), which are used for cellular phones, system in packages (SiPs), closed-circuit televisions (CCTVs) and others; multi layer boards, which are used for routers, high-end servers, unmanned aerial vehicles (UAVs) and others; memory module PCBs, which are used for high speed/high density server modules, desktops, laptops and others, as well as automotive PCBs. As of December 31, 2011, the Company had 10 affiliated companies.