GUANGZHOU WANGTONG BATTERY CO., LTD is a professional manufacture in power bank,mobile phone battery and charger, and as more than 10 years' experience in such business, our Purchasing and QC Management System is rather ripe, which can promise for the best quality under attractive price. Our Factory: Speciallized in power bank more than 12years. Our Product: Variours and Newest. Our Service: Whol