Natural spices include agarwood, sandalwood and various herbs and woody spices. High-grade natural adhesives and combustion improvers mostly use bark powder of Cinnamomum camphora and Machilus thunbergii, which has high viscosity and combustion-supporting effect. It is a good adhesive and combustion-supporting material for making thread incense and roll incense, commonly known as "Nanzi powder".
In addition, rosin, honey, bletilla striata and elm bark powder can all be used as natural adhesives. The main components of inferior and cheap chemical spices are sawdust, chemical essence, chemical adhesive and chemical combustion improver, and a small amount of natural spices are added. When chemical essence, chemical adhesive and chemical combustion improver burn, harmful gases such as benzene will be produced.
The natural fragrance is fresh, mellow and greasy, and there is no bad feeling such as dryness and irritation. After long-term use, there will be no throat lock, tightness and dizziness. After burning natural incense, the incense ash is basically gray and grayish white, which is not easy to disperse and has the smell of fine burnt grass ash.