... indoor air;5. Creates clean, hygienic and bacteria-free air;6. Releasing at least one million negative ions, fresh and ... light, Quiet and silent operation,5. Advanced humidity technology for better humidity6. Idea for home, personal room, beauty salon, aromatherapy salon, ... nanophase plastic materials, protect against mould and bacteria11. Suitable for room size 15-40 square meter 12. Easy to operate ...