... (PE)roasting painting (b): Core: nontoxic polyethylene (c): Back: Aluminum-alloy sheet coated with polyester resin painting (d): Surface finish ... tailored, bent, arched and installed.Application: 3mm inner-wall aluminum composite panel is widely used to decorate isolating wall, ceiling ... construction curtain wall, balcony, store front, signal board, awning, body of cars, industrial material and so on.