壹石通(688733.SH)：暂未与长鑫存储发生直接业务关系

Group 1 - The core viewpoint of the article is that 壹石通 (688733.SH) has not established a direct business relationship with Changxin Storage [1] - The company operates as an upstream supplier of functional materials, specifically in the chip packaging materials sector [1] - The direct customers of the company include manufacturers of EMC (epoxy molding compound), GMC (granular epoxy molding compound), LMC (liquid epoxy molding compound), and Underfill materials [1]