大富科技：子公司大富方圆深耕金属材料的研发和工艺，是折叠屏系列手机转轴核心部件的主要供应商

Core Viewpoint - The company, Dafu Technology, confirmed its subsidiary Dafu Fangyuan is a key supplier of core components for foldable screen smartphones, specifically the hinges, but cannot disclose specific business details due to confidentiality agreements [2]. Group 1 - Investors inquired whether the company's products are used in Huawei's Mate XTs and other foldable smartphones [2]. - Dafu Technology's subsidiary focuses on the research and development of metal materials and has established itself as a major supplier in the foldable smartphone market [2].