The copper foil concept stocks rallied sharply, with Wanshun New Material seeing a 20% limit up. Yinglian Co., Ltd., Tongguan Copper Foil, Woge Optoelectronics, Dongwei Technology, Jiaocheng Ultrasonic and Shuangxing New Material also followed suit. According to the news, the copper-clad laminate leader Jian Tao Laminates issued a price increase letter on the 20th, citing the increase in copper prices and full orders as the reasons for the adjustment. Analysts believe that Jian Tao's price increase is expected to trigger similar moves from other manufacturers in the industry. (Cailian Press)