Joss Bark Litsea glutinosa is a is made completely from red bark, Litsea Glutinosa .Litsea Glutinosa tree is native to Vietnam central highland of Gia lai. Litsea glutinosa bark is mainly materials for grinding JOSS POWDER One of most important raw materials for making incense sticks, Cones, Dhoop, Mosquito coils, mosquito-repelling incenseâ?¦