Jiangsu Yida Chemical (300721.SZ) stated on the investor interaction platform on June 3 that some of the company's products can be used for cleaning copper-clad laminates in PCBs.
怡达股份(300721.SZ)：部分产品可以应用于PCB覆铜板的清洗
Yida Co., Ltd. (300721.SZ): Some products can be used to clean PCB copper-clad panels
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