High-Resilience Soft Polyurethane Foam: A Comprehensive Guide to Specialized Catalysts Introduction High-resilience (HR) soft polyurethane (PU) foams are a critical component in the manufacturing of high-performance cushions, mattresses, and other upholstered products. These foams are characterized by their excellent recovery properties, durability, and comfort, making them ideal for applications where repeated compression and decompression are...