Hello and Greetings,It is nice to write to you. This is Bui from Vietnam. I would like to buy AROMA/OIL DIFFUSER/ESSENTIAL OIL HUMIDIFIER.Could you please send me the quotation from this with the details as below:Material,Type,Use,Do you have any quality assurance certificates?Please copy and paste the questions and answers back to me.Yours faithfullyBuiKIM LONGny Tin Nhn l t in thoi di ng Show More