At 2012, we undertook sweet potato starch production line with capacity 50TPH input, from Shengqi Biological Engineering Co., Ltd. Jining, Shandong. This sweet potato starch production line, using internationally advanced technology, produces nationally high quality products. Compared with traditional process technology, this automatic and continuous sweet potato starch production line is more energy-saving, has higher yield, costs fewer personnel and lower labor. By-products is also well used, cell sap produced is sent to yeast plant for comprehensive utilization, which raises economic benefits. This plant deeply processes sweet potato starch to sweet potato vermicelli and noodles, which enhances extra value of products by lengthening industrial chain.