... are color coated panels with core sheet of anti-combusition polyurethane, polyisocyanurate and phenolic foam. Its operation principle is as follows ... the double-belt conveyors together with panel’s top facing sheet. Between the two conveyors, injected raw material is foamed ... are color-steel. The main technical parameters as follows, Phenolic foam sheet core thickness :50mm,60mm,80mm,100mm,120mm; Al-Mg- ...