COOLUP ELECTRONICS CO., LTD specialized in designing, manufacturing and marketing of portable power banks. OEM and ODM orders are welcome!Nowadays, smart phone users find battery power a headache, in that case portable power bank would be a indispensable outfitter for them. 7 years experience, with CE ,FCC, RoHS,PSE, UL, MSDS,UN38.3 certificated products, 30 mins reach Shenzhen air port, this is how we keep superior quality and competitive offers for global valued customers. Please visit our website www.mycoolup.com. If any products meet your demand, please contact us for further information. We're sure your any inquiry or requirement will get prompt attention.