After the preliminary management and standardization work, the company applied for the third-party ISO9001 quality management system certification by Shanghai Yangbiao Certification Co., Ltd. in January 2021. The company’s quality management was systematically reviewed, and no major nonconformance was found, 2 general nonconformance items and 4 suggestions were found. In the middle of February, the company completed the rectification of the general nonconformance items and suggestions. On March 5th, Shanghai Yangbiao Certification Co., Ltd. issued our company the ISO9001 certificate.