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The PU sandwich panel line shown here is used for continuously making sandwich panels with the facing layer (s) of color steel or galvanized sheet and the core material of polyurethane. Whole equipment is divided into PU insulation part and Facing sheet profiling part. This line for roof and wall panel made of three kinds of material, in other words, sandwich panel including a Steel / Aluminium sheet + PU resin foam + Steel sheet, or Steel / Aluminium sheet + PU resin form + PVC Sheet. This line is easy to operate, high productivity, and reasonable price. Suitable for making roof wall color coated PU insulated sandwich panels and cool room insulated panels.