Formaldehyde-free fixing gị n'ụlọnga, budata mma agba ngwa ngwa nke kpọmkwem esiji na reactive agba (dị ka teku fastness, ịsa fastness, ajirija ngwa ngwa na udu mmiri ikpo ngwa ngwa, wdg), karịsịa kwesịrị ekwesị maka reactive na-egbuke egbuke na-acha uhie uhie na oji akwa. 23121
