Among the grapefruit in South Korea, the grapefruit in Gaoxing County of Jeollanam-do is the most famous. Grapefruit in Gaoxing County is rich in nutritional value. There are many international and agricultural associations in citron tea sold by South Korea in China. International food is of a trade nature, and they also have processing plants in China. I don't know if they use Korean grapefruit, which is slightly cheaper than that of the farmers' association. The citron tea factory of the Farmers' Association is supported by the Korean government, so the quality should be guaranteed. In addition, the Korean Agricultural Association was established to protect the interests of Korean farmers. In order not to lose the agricultural economy, the Agricultural Association is responsible for buying and selling the crops planted by farmers, and ensuring farmers to recover their funds as soon as possible in the form of small profits but quick turnover.