Keenest Technology Co., ltd is a professional power bank manufacturer that combines R&D, production, sales and service together to provide our clients with solid support. Founded in 2009, Shenzhen, as one of the most well-known power bank manufacturers, with senior management team, advanced production and testing equipment, strong production capacity, we have worked with numerous world-class brands, such as TSST（Toshiba Samsung Storage Technology Corporation）; Redbull, Vivan, LG, Aigo, Pentax, Powermax etc, sales up to 500k pcs per month.