In the late 1970s a small company trading in building supplies started to expand by acquiring companies and establishing new ones. Eventually, under the umbrella of the ARAN group, it developed into a powerful group of companies which has always focused on the interests of their clients and on the market conditions. In anticipation of market developments the group adapted its range of products and services accordingly in order to always ensure ARAN’s financial strength. As a result of trading in building supplies, the company started to realize independently own building projects and to provide disposal and recycling services. With the increasing importance of environmental protection the technical challenges involved in providing these services increased as well. Waste water treatment activities were spun off, which finally resulted in the establishment of the Technology business line.