CITECH Co., Ltd. manufactures and sells identification and ticket issuing machines in South Korea. It also makes digital advertising and information kiosks, hi-fi audio products, and telecommunication media products. The company develops and sells broadcasting, digital content, and access control systems, and is involved in equipment rental, restaurant operations, grocery sales, software development, hardware-related tools and programs, an online education and learning platform, and franchise business. Formerly known as Sam Yung Holdings Co., Ltd., it changed its name to CITECH Co., Ltd. in April 2015. Founded in 1967, it is headquartered in Seoul, South Korea.