Setting up Lesson-system aims at ensuring that the ISO standard system of Sanyou community can be effectively operated and improving the power of company management. The establishment of the system is simultaneous with the construction of the factory. As early as 1999, we cooperated with Germany Rhine TUV certification agencies. Then, we have passed certification of ISO9001, ISO14001 and IATF16949. In 2008, we are tailed by TUV as "strategic partners". At the same time, we actively complete the document of environmental safety regulations and human rights, such as the ROHS, REACH, PAHS, EICC. Through the daily audit and focused way of internal audit, the self-improvement, the management process of company is optimized to improve satisfaction of customer.