The visual product language is a unique "letter" for the brand. Match design is based on the existing products, based on the prototype and appearance plan, combined with interdisciplinary knowledge to reasonably optimize the internal structure of the product and control the cost to ensure the mass production of the product Landing and safe use. Visual recognition uses the product's window: black "glass" to integrate the functional parts. Use the "Angel Eye" UI element symbol to run through the series of products.