Infotmic Co.Ltd(000670) : internal control assurance report Infotmic Co.Ltd(000670) all shareholders: in accordance with the guidelines for audit of enterprise internal control and the relevant requirements of the practice standards of Chinese certified public accountants, we audited the effectiveness of internal control over the financial report of Infotmic Co.Ltd(000670) (hereinafter referred to as Yingfang micro company) as of December 31, 2021. 1、 The responsibility of the enterprise for internal control is the responsibility of the board of directors of Yingfang micro company to establish, improve and effectively implement internal control and evaluate its effectiveness in accordance with the basic norms of enterprise internal control, guidelines for the application of enterprise internal control and guidelines for the evaluation of enterprise internal control. 2、 Responsibilities of Certified Public Accountants our responsibility is to express audit opinions on the effectiveness of internal control over financial reporting on the basis of audit work, and disclose the significant defects of internal control over non-financial reporting that we have noticed