正帆科技(688596.SH)：对长鑫存储有少量间接投资，是长鑫存储的长期合作伙伴和重要供应商

Group 1 - The core viewpoint of the article highlights that Zhengfan Technology (688596.SH) is deeply engaged in the integrated circuit industry, primarily providing critical equipment, core components, materials, and professional services to wafer manufacturers and key process equipment manufacturers in the chip supply chain [1] - Zhengfan Technology has a minor indirect investment in Changxin Storage and is recognized as a long-term partner and important supplier to Changxin Storage [1]