Erhard Ludwig Thoma, http://www.thoma-stuttgart.de, see http://www.worldwideshoswho.com, with 40 years experience in concrete, with GOMACO from 1976 to 2011 and strong influence on Gomaco products. First ever built 50 feet paver GP 5000 for German Highway construction, First ever built SWING-LEG paver for Zürich airpot with WALO and first 4-track Commander for WALO. Today representing CONCRETUM Q-Flash concrete 2/20. The fastest concrete to be used with slipform-pavers.