According to the provisions of Article 39 of the Measures for the Administration of Tax Registration (Order No.7 of State Taxation Administration of The People's Republic of China City, People's Republic of China (PRC)), taxpayers and withholding agents who lose their tax registration certificates shall report to the competent tax authorities in writing within 15 days from the date of losing their tax registration certificates, truthfully fill out the Report Form on the Loss of Tax Registration Certificates, and recognize the taxpayer's name, tax registration certificate name, tax registration certificate number, tax registration certificate validity period and the name of the issuing authority in the tax authorities.