This is a customized commercial self-service coffee machine designed for CU, the largest fast supermarket chain in South Korea. The design goal is to attract customers to feel the temptation of good coffee and then consume more coffee. We have made in-depth thinking from the product image and experience, so that this coffee machine has a simple appearance and high-end texture (the metal surface is frosted or brushed to increase the product texture), it has rich and beautiful details (silk screen printing, buttons, knobs, highlight C edge, etc.) and clear functional orientation. The interface of low-end products is messy, making people at a loss. The use of lighting effects can also increase the high-end feeling of the products, but it needs to be restrained and has a good sense of visual rhythm. This is mainly reflected in the division ratio and material splicing. The use of highlight materials is restrained and only used in details or small parts, the use of low-end products is more widespread.