Agarwood is an extremely valuable resinous heartwood extracted from the stems of Aquilaria and Gyrinops trees which are mostly native to Southeast Asia. The procedure involves a physical contamination of a wounded part of the tree where a certain fungi will attack the cells of the stem which will lead to the production of Agarwood. Agarwood is produced as an antibody to fight against the fungi and this is a unique characteristic of Aquilaria and Gyrinops trees.