-Ten years of experience in ultrasonic diffuser , humidifier,and air purification field.Independent R & D, design and production-Products: ultrasonic diffuser , humidifier,and air purification. 80% of the orders for export-We have our own mould factory, own injection molding plant.factory covers an area of more than 2000 square meters, has morethan 100 workers, can produce 5000 sets per day.-Base ISO9001:2000. All products and raw materials meet CE, RoHS and other international certification standards, All product one warranty-Sold in more than 30 countries, including the United States, Japan, South Korea and some European countries