... maintain the freshness of food by absorbing ethylen. bamboo charcoal granuleBamboo charcoal is a kind of natural and porous substance, ... by vegetables and fruits. Negative ions produced by bamboo charcoal can remove harmful gas, inhibiting mold, micro-organisms ... charcoal bag into the refrigerator. Shine it half a month, and it can be continuously used for one year.Warm notice: the bamboo charcoal ...