Channel 21, formerly known as RTL Shop, is a German cable and satellite shopping network based in Hanover. The network was part of Europe's largest media company RTL Group and supplies programming to more than 20 German-language stations. RTL Group is a unit of the German media company Bertelsmann. Channel 21 was launched as RTL Shop on 1 March 2001. The main competitors are HSE24 (Home Shopping Europe) and QVC.