What material is used for Bulb and energy saver?

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What material is used for Bulb and energy saver ? Name that material ? Thank you be fast and accurate 

May 26th, 2014

Filament for Bulb thank You and Oxides (Gas) for energy saver 

May 26th, 2014

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May 26th, 2014
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May 26th, 2014
Feb 22nd, 2017
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