楚天科技(300358.SZ)：公司旗下楚天净邦从事洁净室系统工程等相关业务

Group 1 - The core viewpoint of the article is that Chutian Technology (300358.SZ) is engaged in cleanroom system engineering and related businesses through its subsidiary Chutian Jingbang [1] Group 2 - Chutian Jingbang is specifically involved in cleanroom system engineering, indicating a focus on industries requiring controlled environments [1]