shenzhen DSX electronics ,are found in 2007, previous called green promo.was specialized in providing the power bank,smartware,blutooth,soloar ,wireless chargers and other accessories etc solution for hi-tech and corporate gift company . company is located in longhua new area,which is near cutting-edge center,combined with factory's sophisticated equipment,make high quality product.for years. ISO9001:2008 ,BSCI approval factory. pls see :www.green-promotionals.com