Sunray Engineering Group Limited is an investment holding company that provides building protection works and supplies building protection products in Hong Kong, Macau, and Mainland China. It offers products for protection against water, thermal, acoustic, and fire, and also identifies, sources, promotes, and distributes suitable building protection products. Its offerings include waterproofing, tiling, and flooring products for residential and commercial buildings and community facilities such as sports centres, theatres, hospitals, and power stations. Founded in 1988 and based in Kowloon, Hong Kong, the company operates as a subsidiary of Ultra Success Industries Limited.