Du Duy Bui*, Tho Phuoc Tran, Kien Trung Chu and Tuan Nghiem Anh Le, Giang Ngoc Doan 2026. Preparation of preservative product for Xuong Com Vang longan based on chitosan and the oligochitosan-iodine complex. Vietnam Journal of Science, Technology and Engineering. 68, 1 (Mar. 2026). DOI:https://doi.org/10.31276/VJSTE.2025.0047.