1, the northeastern sequoia can absorb carbon and oxygen 24 hours a day, absorbing carbon monoxide, nicotine, sulfur dioxide and other toxic substances, the Mandeville red bean tree can only absorb carbon monoxide, nicotine, that is, the northeastern sequoia to release the good substances more.

2, the northeastern sequoia can be extracted paclitaxel amount of 20%, the amount of Mandevilla sequoia can be extracted paclitaxel for 13%, that is, the northeastern sequoia can be extracted paclitaxel amount more.