(ADPnews) - Jun 8, 2011 - Swiss machine maker Meyer Burger (SWF:MBTN) is holding on to the offer price of EUR 22 (USD 32.3) per share for German photovoltaic technology firm Roth & Rau (ETR:R8R) as it considers it attractive, daily Handelsblatt reported today, citing Meyer Burger's CEO Peter Pauli.