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By certification 
Get more from our charging cart with the multi-purpose HJ-CM13. It quickly and safely charges up to 36 smart devices for ipads.
Product Features:
1.Lock: 2 ordinary rotary tongue locks.
2.External with indicator metal switch + power socket + optional USB interface.
3.Adopt integrated power management system: integrate leakage protection, overload protection, time control management, and constant power supply.
4.The exterior is designed in a vertical style. The door can be opened 180°.
5.Reserve multiple air flow holes for natural heat dissipation.
http://www.hichargingsolution.com/
