Anti-Yellowing Treatments for Molded Polyurethane Bra Cups and Liners 🌟 Introduction: The Invisible Enemy – Yellowing in Polyurethane In the world of intimate apparel, molded polyurethane (PU) bra cups and liners have become a staple material due to their softness, flexibility, and ability to retain shape. However, one persistent challenge has haunted manufacturers and consumers...