KML Technology Group Limited is an investment holding company that provides mechanical and electrical engineering solutions and services in Hong Kong, Taiwan, and internationally. It operates through segments including Transportation Mission Critical System Solution; Mobile Ticketing and Digital Payment Solutions and Services; M&E Technology Solutions and Engineering Services; Digital Fabrication and Maintenance Service; and Sales of Products, Parts and Components. The company offers railway signalling, communication, control systems, point operating equipment, mobile ticketing and digital payment solutions, and maintenance support for systems such as AFC and trackside signalling. It also engages in the design, installation, testing and commissioning, and maintenance of mechanical and electrical engineering systems, and supplies railway signalling and AFC related products, parts, and components. Founded in 1977, it is headquartered in Sha Tin, Hong Kong.