What's the name of the vermicelli in the restaurant stewed chicken soup?

The fans of stewed chicken in the hotel are called kuanfen. Stew chicken soup with wide noodles, the chicken soup is crystal clear, Q-shaped and smooth, the chicken is crisp and rotten, and it is fragrant but not greasy. Wide noodles are vermicelli products made of sweet potato as the main raw material by closed assembly line production technology, which are uniform and transparent, not rotten after long cooking and smooth in taste.