For satisfying the needs of customers from different countries, almost all manufacturers of video wall strictly follow the national and international production standards including ISO standard. For example, ISO creates documents that provide requirements, specifications, or characteristics that can be used consistently to ensure that materials, products, processes, and services are fit for customers' purposes, and conform to the industry standards. In this way, the whole production process goes safely, smoothly, and efficiently, and the finished products have the features of reliable quality and guaranteed service life.