S-Information Technology Co., Ltd. is a Korea-based company engaged in the manufacturing of toner cartridges. The Company operates two main business divisions: toner cartridge business division, which provides toner cartridges, which are used in laser beam printers (LBPs) and all in one printers. and optical network system business division, which provides systems including coarse wavelength division multiplexing-passive optical network (CWDM-PON) systems and optical components. The Company mainly provides its toner cartridges to Samsung Electronics and optical network systems to Hanaro Telecom. It exports its toner cartridges to the United States and Europe. The Company completed the merger with NG Intenational Telecom Inc and xytec.co.ltd, on August 25, 2009. Through the merger, it is also engaged in call service business and amplifier manufacturing business.