Core Viewpoint - The company, Tian Sheng New Materials (300169.SZ), clarifies that it does not produce fiberglass products, focusing instead on structural foam materials used as core materials in composite applications [1] Group 1 - The company's structural foam materials serve the core functions of enhancing composite stiffness and reducing weight [1] - These core materials are bonded between two composite skins to form composite materials [1] - Common skin panel materials used in these composites include fiberglass and carbon fiber boards [1]