At 2005, we built sweet potato production line with capacity 25 TPH input. We offered equipments, technical design, installation, etc. This project runs well and produces products with stable quality. Products from this project are hot sale all over the world. This project deeply processes starch to noodles and vermicelli, which enhances extra value of products. This project also extracts sweet potato protein from cell sap as a health food with high extra value, improving comprehensive utilization rate of this project.