Josef Krysa, professor from University of Chemistry and Technology in Prague, talks with members from the resource and environmental engineering institute at Shanxi University in Taiyuan on April 25. [Photo/sxu.edu.cn]

Professor Krysa delivers a report on the Photocatalysis at University of Chemistry and Technology to teachers and students from College of Environmental and Resource Sciences and College of Chemistry and Chemical Engineering at Shanxi University in Taiyuan on April 25. [Photo/sxu.edu.cn]