... )Aluminium alloy panel coated with decorative coatings 2)Sound insulation, heat insulation, 3)Heat preservation,fireproof Basic ... into too much closes, the transmission of energy and sound wave is largely restricted. Compared with other curtain-wall ... honeycomb panel has better heat protection and sound isolation features.Features:1) Sound insulation, heat insulation, heat preservation2) Fireproof3 ...