Material 1: Letter of Commitment on Credit Recovery (with official seal) Material 2: Copy of main registration certificate of administrative counterpart: mainly including business license, certificate of legal person of public institution, registration certificate of social organization, registration certificate of private non-enterprise unit, registration certificate of legal person of foundation, etc. Material 3: a copy of the punishment certificate of the relevant administrative office, and stamped with the official seal; Material 4: application for credit repair; Material 5: Relevant certification materials for participating in credit training;