DISA Limited, an investment holding company, engages in trading consumer and electronic products in Singapore. The company operates through four segments: Supply of Construction Materials; Energy Management Services; Technology; and Investment Holding and Others. It is involved in the supplying and trading of construction materials, including sand, granite, and coal; recycling and trading of scrap metals and electronic waste products; marketing of environmental friendly systems; development, marketing, distribution, and sale of digital security systems; trading of electronic consumer parts; research and development, and market promotion of electronic products; and marketing, distribution, advertising, and provision of anti-counterfeiting solutions. The company also provides industrial design; energy audit and management; and general commercial and technical consultancy services. It also serves the United States, Germany, and European markets. The company was formerly known as Equation Summit Limited and changed its name to DISA Limited in February 2017.DISA Limited was incorporated in 1975 and is based in Singapore.