凯盛科技：公司生产的超薄柔性玻璃可用于折叠屏手机，已向下游客户批量交付并产生一定的经济效益

Group 1 - The company, Kaisheng Technology (600552.SH), confirmed that its ultra-thin flexible glass can be used in foldable smartphones and has already delivered it in bulk to downstream customers, generating certain economic benefits [2] - The inquiry from investors specifically asked about the application of the company's flexible glass in brands such as Huawei, Honor, Oppo, and Vivo [2] - The company is actively engaging with investors regarding the performance and application of its products in the foldable smartphone market [2]