温州宏丰：关于子公司获得专利证书的公告

Group 1 - The company Wenzhou Hongfeng announced that its subsidiary, Zhejiang Hongfeng Copper Foil Co., Ltd., has recently received a utility model patent certificate from the National Intellectual Property Administration [2] - The patent is for a device designed for the absorption of copper powder in copper foil production [2] - This development indicates the company's commitment to innovation and enhancing its production capabilities in the copper foil industry [2]