We Wonders Technology Co.,Ltd, founded in 1999, are always in the forefront of China audio industry. In past 20 years, we has established a stable cooperation with customers worldwide, such as Bestbuy, Walmart, Carrefour, Tesco, Sainsbury and so forth. DOSS own a good market reputation in China. Our turnover is 80 million dollars a year and keeps growing. Now DOSS is the top audio brand on Amazon.