Its fire-retardant has reached grade A1, and the Refractoriness temperature over 1200 degree.
0
4
We have explained(the truth) in various ways in this Qur'an, that they may be warned;
but it only increased their Refractoriness.
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5
(17:41) We have explained(the truth) in various ways in this Qur'an, that they may be warned;
but it only increased their Refractoriness.
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6
Its Refractoriness temperature over 1200 degree This Refractoriness temperature
is far more than the other roofing materials, such as cement sheets, iron sheets, pvc sheets, etc.