Phase 3: during the exhibition. Is the Sukhothai, Ayutthaya and Rattanakosin era up until the contemporary cultural library of phetchabun and circulating exhibitions?
Phase 3 exhibit in subsequent periods. Is Sukhothai, Ayutthaya and Rattanakosin Until the contemporary era Library Cultural Phetchabun Circulation and exhibition halls
Phase 3 exhibit in the later is the Ayutthaya and Rattanakosin era to the contemporary era, library culture of the world. And exhibition halls circulation.