1. Thermal insulation composition panel are used widely 2. fire proof 3. beautiful apperance ... factory, workshop, container house, etc.The width of the sandwich panel is 930mm, and 1,150mm Upper and lower layer: uses ... plate: 0.3 to 0.6mm Middle: polystyrene foam board, rock wool, fiber glass, PU foam, etc.Thickness: 50mm, 75mm, ... , and it is in low price Thermal Insulation rock wool sandwich Panels