1971     Founding of AEROB Entstaubungstechnik in Wehingen, Germany


1980     Construction and move to the new errected production building in Renningen,



1998     Incorporation of AEROB Entstaubungstechnik in the Weis Industries Group


2009     Association of the traditional brands AEROB Entstaubungstechnik and

            LTG Textillufttechnik to LTG AEROB Filtration Solutions GmbH


2012     Merging of traditional filter brands LTG AEROB and Beth


2013     Start-up of bg filtration gmbh and continuing of the brands AEROB and

            LTG Textile Air Engineering


2014     Amasyst AG is the new distribution partner in Switzerland


2015     The products of LTG Textile Air Engineering are represented in the American Market

            by R&R Beth Filtration


2015     Founding of bg filtration srl in Italy