... heat-insulation 2.Easy to installation and maintain 3.Lighter weight and higher strength Specification of rock wool sandwich panel ... 643°CThe content of the organics: 2.9% Characters: Light weight, fireproof , heat-insulation, sound absorption, and anti-seismic Color ... coating Feature of the color steel sanwich panel:1. Light Weight: 10-14KG/m², equivalent to 1/30 brick wall2. Insulation: Core ...