Back to the nature save the green world, recycle resources. Blending and polymerizing with aliphatic materials(such as PLA, PHBV, PCL), the modified tapioca and corn starch are made into bio-based degradable products with the unique formula and technology, From the raw material to the final biodegradation, biodegradation products come into nature with the function of photosynthesis. Biodegradability has past the international in spection standard.