Infotmic Co.Ltd(000670) : assurance report on the correction of important early errors Infotmic Co.Ltd(000670) all shareholders: we have verified the attached description on the correction of important early errors prepared by the management of Infotmic Co.Ltd(000670) (hereinafter referred to as Yingfang micro company). 1、 Restrictions on the users and purposes of the report. This assurance report is only used when Yingfang micro company discloses the correction of important previous errors, and shall not be used for any other purpose. 2、 The responsibility of the management of Yingfang micro company is to provide true, legal and complete relevant materials, In accordance with the relevant provisions of the accounting standards for Business Enterprises No. 28 – changes in accounting policies and accounting estimates and correction of errors and the rules for the preparation of information disclosure of companies offering securities to the public No. 19 – correction and related disclosure of financial information (revised in 2020) (CSRC announcement (2020) No. 20), the statement on the correction of important early errors is prepared, And ensure that its contents are true, accurate and complete without false records, misleading statements or major omissions