High Temperature Natural the Car and Home Air Purification Activated Charcoal/ Bamboo Charcoal Bag/250g Formaldehyde of indoor decorate a legacyTVOC,, ammonia, hydrogen sulfide, etc Harmful gas has good adsorption and decomposition. Improve the bedroom environment. Bamboo charcoal with humidity two-way regulating function, Wet to open air conditioning room can be automatically, maintain moisture balance Bamboo charcoal can increase the amount of negative ions in the air, Create a good physical and mental health work, living environment. package:1 pack (Weigt: 250g)