Solar Energy LED Key Buckle
|The solar cell s main principle is through the use of semiconducting material, and |
put the thinner model N semiconductor on the thick P semiconductor. When the
photon hitting the surface of this equipment, the adjoining plane of the model P
and model N semiconductor will create the electron scattering to produce the electric
current. The electric current can be stored up in the accumulator. It does not
need to replace the battery, and an touchable switch is available. Moreover, it is
convenient to take when in travel.
Blister + paper card
It can be designed by clients demands
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