Polyurethane (PU) sponge is a high-performance material widely used in various fields. It is known for its unique characteristics, durability, and versatility. This article will provide a detailed introduction to this magical material and its applications in different industries. What is polyurethane sponge? Polyurethane sponge is a kind of polymer foam produced by the reaction of isocyanate and polyol. According to different production processes, it can be divided into types…