Positive insulation is a layer insulation that implements in such a way that it prevents the leaked water from entering the structural element, and this element remains intact. As for the passive insulation when the leaked water has entered the structural element, it has been saturated with it and may have destroyed it, as the function of negative isolation is to prevent this water from leaving the other end of the structural element to protect the layer that covers it (cement, paint, and possibly other elements) from the negative impact of this water.
The welding process is used for the purpose of joining metals together, where they are heated, liquefied and linked together, and then the two pieces become connected in strength or stronger than the original metal.
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We see it in matana as a necessity in light of the spread of the Covid-19 pandemic, as it is a security scanning device in which body temperature is also measured to ensure your safety and the safety of all your customers.
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