| 摘要 |
PROBLEM TO BE SOLVED: To clearly display letters, etc., on the surface of an incense stick. SOLUTION: This method for imparting letters or a pattern to an incense stick comprises mixing an incense stick material with a colorant having a bright color, forming an incense stick having the bright color, and then adding high heat to the surface of the incense stick to burn organic base materials such as a binder, a burning auxiliary, etc., thus imparting black letters or pattern to the incense stick.
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