Premium Photo | An led lamp and a classic calculator on a gray background. the concept of energy saving.
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![LED bulb and calculator - Stock Photo [24588015] - PIXTA](https://en.pimg.jp/024/588/015/1/24588015.jpg "LED bulb and calculator - Stock Photo [24588015] - PIXTA")
LED bulb and calculator - Stock Photo [24588015] - PIXTA
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White calculator and incandescent lamp or LED bulb on green background. Concept showing the payment of electricity bills. The concept of savings electricity. Reducing the payment of utility bills.. Stock Photo
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