A kilo of flour can produce two kilos of five liang cold noodles and two wuliang gluten, that is, the ratio of cold noodles to gluten is about one to zero one. A kilo of flour can make 40 cm diameter cold noodles, and 4.8 noodles can make 240 cold noodles. There is a video of making handmade cold rice noodles in my mouth space. You can see the detailed analysis and explanation of the cost and profit business model of cold rice noodles.