Siridion® worldwide

Photovoltaics
Denise Choubardas
Marketing Photovoltaics
+49 69 218-2150
+49 69 218-62150
denise.choubardas@evonik.com

Optical Fibers
Dr. Hans-Jürgen Höne
Director Industry Segment Performance Products
+49 69 218-3067
+49 69 218-63067
hans-juergen.hoene@evonik.com

Semiconductor
Dr. Thomas Knothe
Vice President, Industry Segements Performance Products
+49 69 218-3378
+49 69 218-63378
thomas.knothe@evonik.com

Other applications
Dr. Hans-Jürgen Höne
Director Industry Segment Performance Products
+49 69 218-3067
+49 69 218-63067
hans-juergen.hoene@evonik.com

North America
Goswin Uehlenbruck 
Vice President Advanced Silanes NAFTA
+1 973 541-8518
+1 973 541-8503
goswin.uehlenbruck@evonik.com

Asia
Dr. Harald Klein
Vice President Advanced Silanes Asia-Pacific
+86 21 61191-056
+86 21 61191-075
harald.klein@evonik.com