do you know strongest manmade material in the world was steel from long time and natural strongest materials in the world is diamond,but now strongest manmade material is carbon nanotubes ,and the carbon nanotubes are most strongest thing made by human ,Carbon nanotubes’ strength is about 63 gigapascals and 1 square millimetre of carbon nanotubes can withstand more than 6,400 kg of weight
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