福斯特：公司目前在PCB领域有感光干膜，柔性覆铜板，感光覆盖膜等产品

Group 1 - The core viewpoint of the article is that Foster (603806.SH) confirmed that Hangzhou Foster Applied Materials Co., Ltd. is its full name and that its PCB business is primarily conducted by its subsidiary, Hangzhou Foster Electronic Materials Co., Ltd. [2] - In the PCB sector, the company offers products such as photosensitive dry film, flexible copper-clad laminates, and photosensitive cover film [2]