Burner size:4.8"*3.2"，cone size：2.8*1.2cm. Smoke only converge in still air, please place holder in windless circumstance so it can backflow. The principle of the backflow is high content of tar which has a greater density than air in smoke, so there'll be tar deposit on the bottom of holder after several use. In ancient times, people will often burn deodorant in the wood. Therefore, before the ancients always incense burning furnace, read or play art, cleaning their thought, make them focus.
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