... letter patents & certifications Rainbow LED Ultrasonic Aroma Diffuser,Ideal Air Cleaner for Home Use Aromatherapy Diffuser machine is a new type of Electric ... , effective, clean and can spread the aromatic molecules in the air. It is heated without the use of candles, and is ... *29.5cm G.W.: 8.8kg Rainbow LED Ultrasonic Aroma Diffuser,Ideal Air Cleaner for Home Use