Architectural Highlight – OPV Solar Trees Geraldine 4 years ago Solar Energy The cooperation between ARMOR solar power films GmbH (formerly OPVIUS GmbH), Merck KGaA, Carl Stahl GmbH, Hager SE, Schmidhuber Architekten and U.I. Lapp GmbH supported by the Federal Credit ASCA – OPV Films by ARMOR