... Morse's hardness: eight Density: 2.5 (g/cm3) Thickness: 5 + 27 A + 5 (mm) Light transmittance: 70 Purity: optimal ... stomach of lifting, flip, reasonable structure, convenient operation. Has a good shade performance, improve the hollow glass insulation performance, ... air conditioning energy consumption. In winter, the blade, make a direct sunlight, fully absorb heat energy, combined with insulating ...