"We have observed that China, over the last 20 to 30 years, has strategically bought mine after mine globally. They take the raw material, they have the processing procedures in China and then they have the monopoly for this raw material. Take lithium: 97% of the lithium we use in the European Union is from China. So we are totally dependent on this one on China," von der Leyen said during her opening speech at the Clean Tech Industry Dialogue in Brussels.