Baht, activated carbon, vermiculite, these three often harmful to the body?
Activated carbon is a porous substance, inert in the air, not only harmful to the body, but also the suspension of air, harmful gases.
Vermiculite, a mineral that is mainly silicate, is inert in the normal environment. It's not harmful to peopleWe must think about the types of rock salt.Water absorbent resin will be partially oxidized in the air for a long time, but it will not be harmful to human health.
Iron powder will oxidize when it meets air, but it is harmful to people's health.Water meets air little, no.
