On October 22, 2020, the EU officially launched an anti-dumping investigation on China's composite aluminum foil production below 21 microns. On November 4, Jiangsu Zhongji Composite Materials Co., Ltd. and two other companies were jointly selected as compulsory response companies; while actively preparing the answer sheet, Jiangsu Zhongji Composite Materials Co., Ltd. cooperated with other five major aluminum foil manufacturers in the industry to jointly hire lawyers, preparing to initiate a damage-free defense to the EU.