Polyurethane(PU)sandwiched panel is composed of 2 layers of colored steel sheets and injected hard forms of polyurethane between 2 layers which feature fireproof materials.
Propor is a high-efficiency foamed molding material adopting a special skin-core structure, composed of EPS (expanded polystyrene) and fireproof protective layer. It is an economical non-combustible and thermal insulation material, featuring easy handling and transportation, as well as excellent structural strength and durability. With comprehensiv1