Huoshanshi charcoal bonsai

The volcanic rocks in the volcanic rock charcoal bonsai are collected from the volcanic lava rocks in Changbai Mountain, mixed with charcoal, and planted with bluegrass that can release oxygen. Such bonsai can absorb harmful gases such as carbon dioxide and formaldehyde left after decoration in the room, and release oxygen. However, its market price is also high, and the price of an ordinary volcanic rock charcoal bonsai is around 1,000 yuan.
Reprinted with attribution： https://cnlocality.com/(Chinese Specialty Products)