AIX-EN-PROVENCE, France (Reuters) - A "Chinese storm" is looming over Europe's growing electric vehicle (EV) sector, Renault Chairman Jean-Dominique Senard told Reuters on Saturday, as Asia's superpower dominates key raw materials to make batteries for zero emission cars. China's recent decision to restrict exports of two metals - gallium and germanium - used in semiconductors and EVs should raise red flags for European leaders as it shows the continent's over-reliance on China and the need to build a costly supply chain, Senard said in an interview. "When I talk about a Chinese storm, I'm talking about the strong pressure today related to Chinese (electric) vehicle imports into Europe," Senard said.