福斯特：目前在PCB领域公司有感光干膜、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) is actively engaging with investors regarding its business operations in the PCB sector [1] - The full name of the company is Hangzhou Foster Materials Co., Ltd., which operates primarily through its subsidiary, Hangzhou Foster Electronic Materials Co., Ltd. [1] - In the PCB field, the company offers products such as photosensitive dry film, flexible copper-clad laminates, and photosensitive cover film [1]