The Car and Home Refinement Bamboo Charcoal Bag/ Air Freshener (450g) 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 It is good for your healthy to put charcoal in your car and your home weight about 450g