The case study mentioned that Nau is a firm formed by a small group of executives succeeding in their previous jobs. They have same aspirations that in addition to generating a profit, companies have an equal responsibility to create positive social and environmental change. Regarding this simple sentence, it is obvious that Nau’s ideal is not just maximizing profits of the firm, but also it is willing to protect and improving both social and environmental welfare. Therefore, from a "go green model" perspective, its approach to doing business can be considered sustainable .It can be seen by its action in several area. In the design area, Nau cooperated with suppliers to invent sustainable fabrics. As a result, 24 out of 32 fabrics are developed to be sustainable. Obviously, the direction of Nau deciding this action is to protect the environment. At the same time, Nau also requires its business partners such as suppliers and manufacturers ,use the way which fit Nau ‘s belief to run their business and cooperate with Nau. Therefore, Nau’s business partners and itself are bound by code of conduct .…