After three years of research, we developed our own refrigeration technology. This is the only product in the world that retains the same deliciousness as fresh food even after thawing. Since sea urchin is a very delicate product, it is very difficult to preserve it in the freezer, and in recent years many people have given up on freezing it. We have spent three years working on technology development and research, and as a result, we hope you will enjoy this product, which will delight people all over the world.