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This solar lunch box can provide heating or cooling service to three additional lunch boxes at the same time. The top solar panel providing energy support can be folded up and placed above the lunch box so that it can be conveniently stored in the lunch box set. Of course, in order to take care of the temperature required for different food preservation, each storage compartment has an independent temperature control, display system, and power supply line, and the user can individually adjust the different meal boxes. In addition, when using the lunch box, the power supply will be automatically cut off to prevent accidents from happening and it is very human.
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Plastic Strap & Tape Co., Ltd. , http://www.nbwraptapes.com