News Fusion MSL & ASSA ABLOY (Switzerland) Ltd. ASSA ABLOY AB took over MSL Schloss- & Beschlägefabrik AG in Kleinlützel in spring 2015. As a final step of the integration into the group, the two Swiss companies ASSA ABLOY (Switzerland) Ltd. and MSL merged in May 2016. As a result of this, MSL AG wil... New logos launched for KESO, effeff and MSL A series of new logos have been designed for the ASSA ABLOY brands KESO, effeff and MSL. Clearer, simpler and more directly related to the ASSA ABLOY brand, they will be introduced by now. Flashback/Review security trade fair "SICHERHEIT 2015" Click here for the photo gallery. DOMINO 4000S Omega Now installation of the 4000S Omega system has been made even more flexible. The modular DOMINO cylinder in the 4000S system can be easily extended or shortened in 5 mm increments, which offers significant advantages: • More flexibility during installat... Takeover MSL ASSA ABLOY has signed an agreement to acquire MSL Schloss und Beschlägefabrik AG, a leading Swiss supplier of innovative locks. KESO App Get the new KESO App for your iPad or android tablet.