EVA foam is a new environment-friendly packaging material, which has the advantages of good cushioning, shock resistance, heat insulation, moisture-proof, chemical corrosion resistance, non-toxic and non absorbent. It is designed to be processed and shaped. Its shockproof performance is better than traditional packaging materials such as polystyrene (foam) and meets the requirements of environmental protection. It is the best choice for export products. Compared with shockproof packaging, it can be cut and shaped. Due to the large difference in density, it can also be used more widely.