According to Baidu Encyclopedia, the trademark RUWENSWAN/ Rukish Black Swan is a brand certified by national intellectual property rights, and its founder Ji Kouzhong is mainly engaged in commodity services, including clothing, body-shaping underwear, finished clothes, underwear, socks, shoes, swimsuits, hats, scarves and so on. The design process is different from the traditional method of setting the bra size according to the cup size. For example, the garment size (S, M, L, XL) adopted by kissing the black swan redefines the wearing attributes of underwear. Each product matches the corresponding fabric. Many products contain Lycra ingredients, and new liquid Lycra fabrics are added. Bring a better product experience to consumers. For example, the brand purpose of Kissing Black Swan is to restore the most comfortable health experience of women, pursue its simple form and function, and give people natural experience and perception. From the use of fabrics and its brand purpose, it can be seen that the quality and comfort of its underwear are acceptable and easy to wear.