How Backflow Incense burners work

This video shows you how backflow incense burners work, and backflow incense burners are easy to use. First, fire the peaked side of the backflow incense cone. Second, put the incense on the incense pot of burner, and then you can watch the smoke just like little waterfall fall down, and smell the flavor View more incense burner here: Thank you for your watching br, br,