Grown at farms: Rơm Vàng Điện Bàn, Đồng Dá Hội An, Ch’ơm Tây Giang plantation, Aur Tây Giang plantation, P’ring Nam Giang plantation.
- Grown using agroforestry and organic methods.
- No chemical fertilizers or pesticides are used, including both synthetic and organic. Organic materials such as oil cakes, soybean meal, or self-made compost are used.
- Use of traditional and purebred seeds, saving and preserving seeds. No hybrid or genetically modified seeds are used.
- No preservation technologies like ozone, nitrogen, irradiation, or any inorganic or organic chemicals are used for preservation. This includes natural organic substances like calcium for preservation.