1. They are made of corn starch, fully biodegradable and compostable. 2. 100% natural and environmentally friendly, hygienic. 3. No chemical treatment, healthy, nontoxic, harmless and sanitary. 4. Within a temperature range of -20 to 120 degree centigrade. 5. Can be used for microwave, roasting and refrigerator. 6. CFC free, acid, alkali and oil resistant. 7. Can be recycled and protect the resource, from nature and back to nature. 8. Variety of sizes, shapes and colors, to clients request and design. 9. Have aroma like butter cake. Up to present, we have passed the, FDA, ISO9001, ISO14001, ,SGS , QS Quality Safety approval. we have different size, different shape, different items we can also design under your need.