Brødrene A.& O. Johansen A/S engages in the business of information technology and logistics enterprise with a technical range of heating, plumbing, and sanitary ware products; electrical equipment and components; water supply and drainage products; and tools. The company is engaged in the supply of electrical equipment, as well as plumbing, heating and sanitary products. Its product range serves two main markets: professional and do-it-yourself (DIY). The professional market for technical installation materials includes sanitary products, plumbing, electrical equipment, drainage products, water-supply systems and tools. The DIY market, operated through SEKO department, includes sanitary products, as well as electrical equipment. As of December 31, 2011, AO had a central warehouse located in Albertslund, Denmark and a logistics center in Horsens, Denmark, as well as 47 shops in Denmark, five in Sweden and one in Estonia. As of December 31, 2011, the Company operated through AO-MAVAB and four wholly owned subsidiaries: Ervex AB; AO Invest A/S; Vaga Tehnika Eesti OU and E-byg.com A/S.