WILO SE with headquarters in Dortmund, Germany, is one of the leading manufacturers of pumps and pump systems for heating, cooling and air-conditioning technology, for water supply and drainage and sewage. The company was founded in 1872 by Louis Opländer as a copper and brass goods factory. Wilo is represented by almost 70 subsidiaries all over the world and employs more than 6,000 people worldwide. In 2009 turnover amounted to 926 million Euros. more »