Insulation metal PU sandwich wall panel
Insulation metal PU sandwich wall panel Surface Middle layer inner layer Al-Zn Alloy Coated Steel Sheet - Thk: 0.3mm - Heat-resisting painting - Standard size: 3800 *380 *16mm - heat insulation PU foaming - fire proof rate: B2 - PU thk: 1.6cm - Aluminium foil paper
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