Formerly known as the sweet potato sweet potato, also known as Hongyu, sweet potato, sweet potato, potato, Fan taro, sweet potato, sweet potato, wire potato, sweet potato, gold potatoes, sweet potatoes, Zhu potato, potato pillow, Fan Ge, white taro, taro fennel. Sweet potato growth habit: Growth Period. Spring potato growing season 160-200 days, and summer potato is about 110-120 days, Puyang pure sweet potato starch noodles, according to the growth characteristics of the red spring in the field and its relationship with climatic conditions, it can be divided into three growth stages. Sweet potato noodles, also known as the sweet potato noodles, vermicelli, is a Han Chinese traditional staple, more than 600 years of history. Sweet potato vermicelli identification: light detection method: optical inspection noodles, vermicelli see the internal organizational structure, there is generally no different color spots pure vermicelli, Henan pure sweet potato starch noodles, inhomogeneity, pure sweet potato starch noodles, a white layer of general add flour. Quality sweet potato starch noodles fine to bare seized dense vesicles, Xinxiang pure sweet potato starch noodles, vermicelli cut neat and clean, no residue, forced broken vermicelli can be issued crisp sound, clear and smooth section.