ad, increased 8.6% (trading -0.67%) Saint-Gobain revs slight better, lighter Asian/Euro sales offset by US, confirms 2012 targets (trading +0.31%) Wacker Chemie Q1 EBITDA below, full year 2012 guidance confirmed with firming demand (trading -5.6%) Linde Q1 EBITDA below, full year 2012 guidance confirmed with firming