ATA Group is a listed company which takes testing and evaluation services as main business. For this case, the main style embodies order and harmony. In overall, it gives us a feeling of peace, calmness and tidiness. The applying of colors represents the characteristics of freshness, relaxation and activeness. The original ecology concept was also applied which gives the working environment the vitality of the nature. When it comes to the structural design, this case pursues the modern, highlighting the rationality and expansibility which facilitate the communication between the departments. The decorative material used in this case has the characteristics of green, ecological, healthy and environmental-friendly. All of the above aims to create a clean and tidy working space.