For many years Karl Gruber was in a leading position in the VOEST-ALPINE Industrieanlagenbau (VAI), lately Siemens VAI, and has eminent knowledge in the international metallurgic machinery business as well as a long term management experience as CEO of Siemens VAI.
Also for many years Gerhard Sonnleitner is in a leading position of the Lisec Group and is a member of the board of trustees. On the side of Mr. Kommerzialrat Peter Lisec he contributed essentially to the structural development of the company.