Insence In Catholic Churches

Hi,

Does anyone know exactly what kind, or kinds, of insence is burned in Catholic churches.

I seem to remember it being burned around ash wednesday or palm sunday.

Please help.

Thanks!

I didn't find the right solution from the Internet.

References:
www.onczfzline-literature.com/forums/showthread.php?30239-Insence-In-Catholic-Churche
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