Records of legislative activities including records about National Assembly members, political parties, etc. via donation or entrustment are collected.

To preserve the records safely and prevent the loss of the original records, the preserved minutes with semi-permanent preservation period, and the filings of parliamentary inspections and investigations and confirmation hearings are digitized and converted into microfilms.

Filings are classified by medium and by type, and preserved in the Preservation Stack, Documentary Art Records Stack, Audio-Visual Records Stack, and Temporary Records Stack. Filings subjected to acidification treatment are deoxidized, disinfected, and boxed.