We, Tecyea Electronic Company, is a professional Lithium-ion Power bank & Power Case supplier, we have over 500 persons factory in Dongguan China and 7 years power pack business experience. Ever offer services for TDK, Toshiba(DVD Group), IBM, iMation, Woolworths etc. We have a: 7 years manufacture experience. b: ATL Cell and main components are from Japan and USA supplier (ATL belongs to TDK group, approved vendor of Apple) c: Good ID design, ever No 1 on Amazon 2009 d: The first one to launch 11000mAh high capacity Li-polymer power pack and will launch 13000mAh. (Most of supplier only can offer 7000-8000mAh)