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Resilience performance refers to the ability of paper to recover its original flat shape after external extrusion and bending, which is a key index for high-grade packaging paper and gift box paper. Ordinary paper has poor structural resilience. After being squeezed, folded and pressed during transportation and storage, it will produce permanent indentations, depressions and bending deformation that cannot rebound automatically. Poor resilience makes high-end packaging boxes lose three-dimensional stereoscopic effect, appear flat and wrinkled, seriously reducing product grade and brand image. Most traditional toughening treatments only improve paper flexibility and folding resistance, but cannot enhance structural resilience. After pressure release, the paper still cannot recover its flat state, and excessive softening treatment will reduce paper stiffness and shaping ability. It has always been a technical difficulty to balance paper stiffness, toughness and elastic resilience. Shandong Ludao Energy Technology Co., Ltd. develops high-efficiency paper resilience upgrading solutions. By building elastic fiber cross-linking network inside the paper, we enhance structural elastic recovery ability, enabling the paper to quickly rebound and restore flatness after external extrusion and bending. The solution maintains excellent paper stiffness and shaping effect, avoids permanent indentation and deformation, improves packaging three-dimensional texture and appearance grade, and enhances product market competitiveness.