Brødrene A & O Johansen A/S, together with its subsidiaries, engages in the sale and distribution of technical installation materials and tools for construction companies in Denmark, Sweden, Norway, and internationally. It operates through two segments: Professional B2B and Private B2C. The company offers plumbing, fittings, sanitary ware, climate, electricity and lighting, tools and machines, brackets, workwear, water supply, and drainage, sewage and climate products. It also involved in the renting of equipment. The company operates through stores, as well as sells its products online websites, such as AO.dk and AO.dk Mobile app. Brødrene A & O Johansen A/S was founded in 1914 and is headquartered in Albertslund, Denmark.