Dongguan GuiTong electronics Co., Ltd , established in 2018 is a leading high-tech enterprise specialized in R&D,design,manufacture, solution, sales and service of Power Bank, battery packs. we are dedicated to provide the safe, portable and durable energy products. Factory an area of over 5300m2, our company has more than 200-300 staffs and more than 20 technical team members. With the professional R&D laboratory and the advanced manufacturer equipment, we are able to satisfy all the OEM and ODM demands. All products enjoy 12 months warranty. Our factory has been verified onsite by world-leading inspection company, SGS Group and ISO9001. Our products are certified to KC,PSE,UN,CE,FCC.ROHS.MSDS authentication and so.