I. Brand background and conceptual background: the natural beauty of donsen was founded in 1972 by dr. Cai yanping, the nation's own brand of biotech and skin protection for the international side. Brand concept: with the business concept of “natural is beautiful”, focussing on the development of natural skin maintenance and on providing healthy, natural beauty experiences to customers. The basic skin-care project of the beauty-care project, which includes basic skin-care services such as facial cleaning, wetting, whiteness and wrinkle resistance, provides individual skin-care programmes for customers, using skin-care products developed by the natural beauty of donson, in conjunction with the techniques of professional beauty-care providers. Specific skin-care projects: deep ion rehydration, fresh skin-purification care, etc. The ion-deep rehydration project uses specialized instruments to import nutrients such as bouria acid into the deep skin and to increase the moistu...