Shenzhen Quawin Electronics Co.,Ltd. is a professional charger and battery supplier.  Established in 2006, we specialize in the R&D, manufacture and marketing of Chargers / batteries / power supplies / BMS and relative electric products which have passed all kinds of certificates as CE/UL/CBB/GS/KC/PSE/SAA and so on. With experienced technical staff members and strictly trained production lines, Quawin keeps expanding and growing with stable steps day by day.