DAEA TI Co., Ltd. is a Korea-based company engaged in the development and provision of railway signal control systems. The Company operates in two business segments: railway signal control system segment, which provides centralized traffic control (CTC) systems, communication-based train control (CBTC) systems, automatic train control (ATC) systems and information and communication (I&C) devices, as well as design and supervision of railway signal engineering, and Internet advertising division, which provides online advertising services. The Company distributes its product within domestic market and to overseas markets.