Our company is one of the best professional company to R&D ultrasonic aroma diffuser in China. Model SZ-A02 is our innovative and patented aromatherapy products. Hope you can interested in our attractive AROMA DIFFUSER. For more information of us, you are welcome to visit our website: www.chinashangze.com , which includes our company profiles, history, and some latest products. In order to meet different requirements of different countries, we will have certified adaptors like CE, GS, UL, KR, SAA, BS, etc for the machine, and the machine itself has got CE and ROHS certification. Here is our patent information. You can have a look. P r o d u c t P a t e n t Europe 000860424 Japan 2008-001046 U.S. 29/302,517 Hong Kong 0800271.1 China 200730061126.0 IFA(www.ifaroma.org) appreciate our aroma diffuser very much. Then want to publish our aroma diffuser in their Aromatherapy Time magazine.