Porphyra haitanensis mainly grows in warmer coastal areas such as Zhejiang, Fujian and Guangdong in China, and everyone is very common. Porphyra haitanensis is used to cook soup at home. Porphyra haitanensis is generally round and tastes a little old, chewy and twisted.

Porphyra yezoensis and Porphyra yezoensis are thin and tender, and the dried products are dark brown with bright luster, with rich natural flavor and aroma, which will melt in the mouth. It is suitable for children and the elderly, and it is also a leisure food for traveling. It mainly grows in the cold areas of Jiangsu Yellow Sea (Nantong, Yancheng and Lianyungang). Laver. Very expensive, and the output is very low. Known as soft gold in the sea. The sea water is too warm to grow and too cold to grow. For example, Dalian and Qingdao in the north are too cold to grow, so there are only Jiangsu (Nantong, Yancheng and Lianyungang)