... /PUDF, Stainless steel with brushed/mirrored. 2. Insulation materialType: Paper honeycomb, Aperture: 20-35mm 3. PanelWidth (mm): 980, 1180( ... protection, economical, good structure, easy to installation. Sandwich panel looks like sandwich. Two external surfaces are made of powder ... usually use EPS, XPS, PU, Rock wool, Paper honeycomb, Aluminum honeycomb etc.They are widely used in clean room as ...