2019-2020 to ensure the continuous suitability, sufficiency and effectiveness of quality and environment policy, quality and environment objectives and quality and environment management system and keep consistent with the company's strategic direction. On June 12, 2020, our company carried out the audit of ISO system. Under the guidance of teachers, all departments cooperated actively and passed the internal audit perfectly. Since the quality and environmental management system has been running, it basically meets the standards and the company's operation requirements. The quality and environmental objectives have been achieved, and there is no need to change. The operation meets the requirements of customers and laws and regulations.