Accel Group Holdings Limited, an investment holding company, provides electrical and mechanical engineering services in Hong Kong. The company engages in the supply, installation, and maintenance of mechanical ventilation and air-conditioning systems; drainage, water supply, swimming pool, and fountain systems; and electrical and control systems, as well as smart electrical control systems in buildings. It also produces and sells disinfection spray equipment and accessories. The company was founded in 2000 and is headquartered in Kowloon, Hong Kong. Accel Group Holdings Limited is a subsidiary of Lightspeed Limited.