Products often only need one of the most important feature design elements to make users remember deeply, that is, good design and conducive to market promotion. As a solid-state drive product with limited size and space, we have refined and introduced the aesthetic elements of the golden section. That is to divide the whole into two, the ratio of the larger part to the whole part is equal to the ratio of the smaller part to the larger part, and the ratio is about 0.618. This ratio is recognized as the most aesthetic ratio, so it is called the golden section. This design has been listed in the domestic and foreign markets in 2016, with large sales volume and has been verified by the market. It is now the main flagship SL series of Rainbow Solid State Drive.