... made up of high-grace raw material, powerful effect against mosquito but no harmful2. Used in the house,hotel,restaurant,office ... aged and children are even more suitable to use the mosquito-repellent incense.3. Smokeless,no offensive odor,environment protection, ... compressive resistance,withstand voltage,no easy to break off.Mosquito Coils:1. Size: 120mm/130mm/140mm2. Burning Time: over ...