Create datasets on the essential oil plants in the Northwestern region of Vietnam (including species composition, distribution, chemical composition of essential oils...),  identify essential oil species of potential and scientific-economic value.
Propose solutions for the protection, development and sustainable use of the potential and valuable species.

- Theoretical results:
+ A total of 233 essential oil plant species belonging to 110 genera and 36 families in some Northwestern provinces were recorded along with the data on morphology, biology, ecology, distribution…. of some representative species. including 100 collection numbers (220 specimens).
+ 167 essential oil plants were classified into 6 commodity groups including timber plants, medicinal plants, edible plants, ornamental plants and spice plants, among them 22 species were listed in the Red Data Book of Vietnam and the Governmental Decree No.84/ND-CP.
+ The yield and chemical composition of essential oils of 56 species were identified, among them some species were studied for the first time.
- Applied results:
The study results were the scientific basis for management, conservation and development of some essential oil plants in four Northwestern provinces of Vietnam (Hoa Binh, Son La, Lai Chau and Dien Bien).

This is the first study on the diversity of essential oil plants in four Northwestern provinces of Vietnam. New records on the distribution of some essential oil plant species were reported and the essential oils extracted from many species were analyzed for the first time in Vietnam.

- Scientific papers in referred journals (list):
8.    Tran Huy Thai, Nguyen Thi Hien, Nguyen Quang Hung, Joseph Casanova, Mathieu Pao Li, Felix Tomi (2022). Chemical composition of Vietnamense Illigera rhodantha Hance leaf and stem essential oils. Rec. Nat. Prod. 16(6): 657-662. 
9.    Tran Huy Thai, Nguyen Thi Hien, Nguyen Quang Hung, Joseph Casanova, Félix Tomi, Mathieu Paoli (2023). Chemical composition of essential oils isolated from leaves, twigs, and wood of Vietnamese Keteleeria davidiana (C.E.Bertrand) Beissn. Journal of Essential oil research, 36(2): 129-134.
10.    Tran Huy Thai, Nguyen Thi Hien, Nguyen Quang Hung, Vu Quang Nam, Francesca Rocchi, Mathieu Paoli, Angle Bighelli, Joseph Casanova (2024). Chemical composition and antimicrobial activity of leaf, twig, fruit bark and seed essential oils of Michelia tonkinensis A. Chev from Vietnam. Journal of Essential Oil Bearing Plants, 27(3): 779-786.
11.    Tran Huy Thai, Vu Thi Thu Le, Dao Viet Hung, Nguyen Thi Hien, Dinh Thi Thu Thuy, Trinh Xuan Thanh (2022). Chemical composition of essential oil from the leaves and twigs of Podocarpus pilgeri Foxw.) in Son La. TNU Journal of Science and Technology, 227(14): 255-259.
12.    Tran Huy Thai, Vu Thi Thu Le, Nguyen Thi Hien, Trinh Xuan Thanh, Dinh Thi Thu Thuy, Ngu Truong Nhan (2022). Chemical composition of essential oil from the twigs of Dacrycarpus imbricatus (Blume) De Laub. in Son La. TNU Journal of Science and Technology, 228(05): 280-384.
13.    Dao Viet Hung, Tran Huy Thai, Nguyen Thi Hien, Dinh Thi Thu Thuy, Tran Thi Tuyen, Ngu Truong Nhan (2023). Chemical composition of essential oil from the leaves and twigs of Podocarpus neriifolius D. Don in Son La province. TNU Journal of Science and Technology, 228(09): 138-142.
14.    Tran Huy Thai, Nguyen Thi Hien, Trinh Xuan Thanh, Nguyen Quang Hung, Joseph Casanova, Felix Tomi, Mathieu Paoli (2024). Chemical composition of the needle and cone essential oils of Pinus fenzeliana Hand.-Mazz. from Vietnam. Academic Journal of Biology, 45(4): 127-135.
- Patents (list):
- Technological products (describe in details: technical characteristics, place):
A dataset on the essential oil plants in four Northwestern provinces; A dataset on the yield and chemical composition of 56 essential oil plant species. 

Department of Agriculture and Rural Development, Department of Science and Technology in Hoa Binh, Son La, Lai Chau and Dien Bien provinces.