Shenzhen Qinhongda Technology Co., Ltd. is a professional manufacturer of Aroma Diffusers for years. Starting in 2009, Qinhongda has focused on products providing special, elegant, attractive, humidify and fragrance diffusers. Over the years, Qinhongda has continually expanded its range, in doing so, has her private moulds and with her own design patents as well, which has such kinds of certificates as CE , ROHS , UL, and so on.