Woori Technology Inc. is a Korea-based company engaged in the design and manufacture of nuclear instrumentation and control systems. The Company operates in two business divisions: system division, which designs and produces nuclear control systems, such as plant monitoring systems (PMSs), plant annunciator systems (PASs), seismic monitoring systems (SMSs), loose part monitoring systems (LPMSs) and distributed control systems (DCSs), used in nuclear power plants, and new business division, which manufactures audio-video (AV) receivers and others. It also engages in the leasing of non-residential buildings. As of December 31, 2011, the Company had five affiliated companies.