China represents world seaweed industry and its development in terms of total cultivated production and
consumption market. Fujian and Shandong provinces contribute 42% and 32% of the total annual cultivated seaweed. Among 7 main popular cultivated seaweed species in China, Kelp (Saccharina (Laminaria Japonica) has been accounting for majority of the total annual production in China, 98% in 1950s and still 68% nearly 1.5 million tons (dried weight) today.