What does the advertising company mean by VI design? What's the full name?

VI (visual identification) Visual identification (brand vision system) refers to the visualization of enterprise identification (or brand identification). Communicate the personality (or unique brand culture) of the enterprise or brand through the unified, standardized and beautiful internal and external display of the enterprise or brand. It includes two parts: basic elements and application elements. The basic elements refer to: enterprise name, brand name, logo, standard words, standard colors, auxiliary colors, auxiliary graphics, auxiliary ribbons, decorative patterns, logo combinations, slogan combinations, etc. Application elements refer to: office supplies, public relations supplies, environmental display, monopoly display, street signs, uniform ornaments, vehicles, advertising display, etc.