It has a structure where both sides are made of steel plates and rock wool is sandwiched in the middle, and can be used as a roofing material. It has excellent insulation, heat retention, and fire resistance, and comes with an instruction manual.
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It has a structure where both sides are made of steel plates and rock wool is sandwiched in the middle, and can be used as a roofing material. It has excellent insulation, heat retention, and fire resistance, and comes with an instruction manual.
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