What are nichelin and kanthal?

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Ce sunt nichelina si kanthalul?\r\nNichelina: un aliaj NiCr, in diverse cantitati.\r\nKanthal: un aliaj FeCrAl, in diverse cantitati.

How to keep your batteries safe

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How to keep your batteries safe
What kind of smoking is more dangerous? Classical Cigarette, electronic cigarette, cigar or hookah pipe.
Formaldehyde - a toxic substance in daily environment
What substance contains classic cigarette ? You are not gonna believe it !
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