Founded in 2009, Shenzhen Gujia Industrial Co., Ltd. Is now one of the leading professional designers and manufacturers of multi-port USB chargers, and other computer-related products, such as mouse. Shenzhen Gujia Industrial Co., Ltd. is aimed at providing best products and service to all of our customers. For more information, please kindly contact me at billymao1979 (at) gmail.com. Thank you!Contact: Billy Mao