Every takeout consumption should not be a burden to the Earth. We have made a breakthrough in turning discarded eggshells into treasure by developing this safe, sturdy, and  biodegradable hamburger takeout box. It not only protects the deliciousness of food, but also protects our common green homeland. Eat with peace of mind, pack with peace of mind.Food-grade safety, suitable for both hot and cold temperatures from -20℃ to 120℃.