The registered brand Cartain has been established in 2016 by the company Firma Elektronik-Idee Weber GmbH. We produce high quality products for the automotive after-sales market, especially for BMW cars. Elektronik-Idee has been active in the automotive business for over ten years now. We are focussed on entertainment networks, HiFi, multimedia, navigation and telecomunikation. The development of software takes place in south east bavaria, not far from the original manufacturing plants of the series 3, 5 and 7.