Underground Aluminum Solar Road Stud: 1. Material:Aluminum alloy . 2. High efficient monocrystalline silicon solar panel. 3. Battery:Resist low and high temperature Ni-Mh storage battery Or super capacitor (Lifetime:10 years) 4. Light source:High bright LED . 5. LED colour:Red,yellow,blue,green,white are available. 6. Light mode
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