Oolong noodle is a kind of boiled instant noodle which applies China's traditional handmade Lamian Noodles technology to industrial production. It is a convenient food made of wheat flour or coarse cereal flour as the main raw material through vacuum kneading, tabletting, compounding, curing, continuous calendering, slicing, cooking, washing, soaking, sealing and packaging, sterilization and cooling. The shelf life of wet noodles made by this technology can reach more than 10 month at room temperature, so the fresh-keeping wet noodles are also called LL noodles and LongLifeNoodles, that is, noodles with long shelf life. At present, the largest and most professional udon noodle factory in China is located in Beijing. The produced udon noodles are exported to the United States, Britain, Australia, Hong Kong and other countries and regions. Its domestic brand is "Yitian Noodle Restaurant", which is currently sold in major supermarkets and has an excellent reputation.

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