Xu Nannan is the chairman of Guangzhou Xin Kouchen Enterprise Management Company, and the founder of Kouchen brand and Su Sha brand. As the chief designer of Kouchen brand, Xu Nannan is very strict in product quality control. Every product has been repeatedly reviewed from concept conception to discussion of raw material composition to clinical trial, which lasted for half a year to one year. Xu Nannan personally checks every link to ensure the quality and authenticity of the products. Therefore, it can be said with certainty that the Su Sha sold by Xu Nannan in Aauto faster is genuine.