REPS represents a unique category within the family of modified Expandable Polystyrene (EPS) beads. It is produced by utilizing post-consumer EPS foam waste as raw material, whose properties are restored through physical modification technology, achieving a 100% recycling rate. This marks a significant leap for foam packaging materials (modified EPS) into the realm of circular economy. Compared to virgin EPS, REPS offers more diverse physical properties and superior compatibility, enabling it to serve as a seamless substitute for conventional EPS across various applications.