sinepow is a chinese manufacture specialized in producing backup battery(portable power bank),which can be widely used to charge smart phone like iphone4 iphone 4s Nokia HTC blackberry and all 5Vdigital device like ipad psp mp3 and mp5 wherever & whenever. As a essential and unassignable accessories of consumer electronics,our products has been the ideal solution who provide continued power.almost every human-being has one mobile and need charger,especially a power continued charger,so our products are aslo a wonderful promoitonal gift.All our products have got certificate of EC;RoHS;FCC ,qualifed competitive price with strong R&D team help us expanding huge market in USA Japan EU and Singapore. Afterthat , we are develop solar power charger ,which can be definitely provide power by nature sunshine,Another new market with environment-protection mind stimulate us to make a beatiful earth.Are you the one who are Environmentalism and want to make money,welcome join us! welcome OEM order