This customized corn starch based 3 compartment 750ml biodegradable lunch box is made from natural corn starch as the core material, combined with PP blending modification technology, and made through high-tech extraction, fermentation, polymerization, and precision molding. It is an environmentally friendly disposable lunch box solution specially designed for global catering, group meals, takeout and other scenarios. The product has a precise positioning of 750ml gold capacity and adopts a scientific 3-grid separation design, which can achieve the classification and storage of staple food, dishes, and side dishes, avoiding cross flavors and balancing practicality and convenience; Overall, it follows food grade production standards and serves as a green alternative to plastic lunch boxes. The product can completely degrade into carbon dioxide and water within 90-180 days under industrial composting conditions, without residue. At the same time, it is compatible with plastic ban policies and environmental standards in multiple countries around the world, and supports customized logos, colors, thicknesses, and specifications as needed to meet the personalized needs and compliance requirements of buyers from different countries.