... 4 can be designed as special requiremen Rock wool sandwich panel:Technical functionUnitIndexQualificationFibre averagediameterμ m4-7GB/T13350-92Densitykg / ... Detailed parameters:1. Composition: Core materials: EPS, Rock wool, Glass wool, Surface materials: PPGI, GI, Stainless steel sheet, ... clay solid bricks, air bricks, color-coated steel sandwich boards, gypsum blocks, wire spatial grid structure ...