Paper corner protectors (also known as paper corner irons, paper corner boards, corner protectors, or paper wrapped corners) are made by laminating kraft paper, yarn tube paper, and high-quality water-based gel. The structure is very sturdy and can resist compression and impact during use. It has strong load-bearing capacity and is the best product for protecting the edges and corners of cardboard boxes. And it can be recycled and reused, green and pollution-free.