Yinlang Tea Industry is an enterprise that mainly produces and sells tea, and its products cover many categories such as green tea, black tea and oolong tea. According to the introduction of [1], the tea of Yinlang Tea is produced in Wuyishan, Fujian Province, and it is made by traditional techniques with high quality. In addition, Yinlang Tea also pays attention to brand image and marketing, and carries out brand promotion through various channels, which has a certain popularity and market share in the domestic market. Therefore, it can be said that Yinlang tea belongs to the middle and high-grade tea brand.