According to Article 21 of the Management Regulations on Putonghua Proficiency Test issued by the Ministry of Education of People's Republic of China (PRC) on May 2, 2003 16 and effective on June, 2003 15, the grade certificate of Putonghua Proficiency Test is used all over the country. If the grade certificate is lost, you can apply to the original issuing unit for a replacement. Forged or altered Putonghua proficiency test certificate is invalid.
Therefore, if the Putonghua certificate is lost, it must be reissued by the original issuing unit.