... EPS sandwich panel: 1.LIGH-WEIGHTED, 2.HEAT AND SOUND INSULATION, 3.HIGHLY WATERPROOF, 4.LONG SERVICE LIFE. EPS sandwich roof panel: ... % < 5 Detailed parameters:1. Composition: Core materials: EPS, Rock wool, Glass wool, Surface materials: PPGI, GI, Stainless steel sheet, galvanized ... clay solid bricks, air bricks, color-coated steel sandwich boards, gypsum blocks, wire spatial grid structure perlite ...