KML Technology Group Limited, an investment holding company, provides mechanical and electrical engineering solutions and services in Hong Kong, Taiwan, and internationally. It operates through 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 segments. The company offers railway signalling, communication, control system, and point operating equipment; and mobile ticketing and digital payment solutions and services. It also provides computerised and advanced maintenance support services for various systems, such as AFC system and trackside signalling system, terminals, and equipment; and part or component replacement, equipment upgrades and improvements, hardware and software upgrade/replacement services, testing, and routine preventive, corrective, and workshop maintenance services. In addition, the company engages in the design, installation, testing and commissioning, and maintenance of miscellaneous mechanical and electrical engineering systems, such as railway station mechanical and electrical engineering services and architectural works, train-borne systems provisions, trackside and depot mechanical and electrical works, and other renovation works; and supplying of railway signalling and AFC related products, parts, and components. It serves transportation companies, engineering companies, and governmental department. KML Technology Group Limited was founded in 1977 and is headquartered in Sha Tin, Hong Kong.