9 levels. Xiangshen Aibao is a trademark brand registered by Henan Ailijian Pharmaceutical Co., Ltd. with the State Trademark Administration. It has a maximum of 9 levels of heating. Its main products are: Changchuntang brand multi-functional fragrant Aibao series, Changchuntang Brand multi-functional moxa sticks are the basis of secret recipes passed down from generations of traditional Chinese medicine.