If you want to continue to apply for joining the Party, the Certificate of Completion of Party Training is useful, which can prove that you have received training from the Party organization. After you enter the society and go to a new unit, your personal file will be transferred to the new unit, and the organization and personnel department will also check it. You can continue to submit an "application for joining the Party" to the party organization of the new unit, and introduce in the "ideological report" that you have received "training for joining the Party", which will help you to be accepted by the party organization of the new unit. I wish you join the party organization as soon as possible!