雅克科技：公司主要经营半导体材料业务

Group 1 - The core viewpoint of the article highlights that 雅克科技 (JAC Technology) is primarily engaged in the semiconductor materials business, indicating a focus on advanced integrated circuit structures [1] - The company stated that HBM (High Bandwidth Memory) is part of the internal structure of advanced integrated circuits, which will lead to an increased demand for precursor materials [1]