温州宏丰：关于子公司获得实用新型专利证书的公告

Group 1 - The company Wenzhou Hongfeng announced that its subsidiary, Zhejiang Hongfeng Copper Foil Co., Ltd., has received a utility model patent certificate from the National Intellectual Property Administration [2] - The patent is titled "A Servo Adjustment Device for Preventing Liquid from Adhering to the Surface of Copper Foil" [2]