... 2.energy saving thermal insulation SpecificationsPU roof Sandwich Panels (1) Thickness of steel: 0.18mm ... Light weight, water-proof, good chemical resistance and seismic resistance, anti-corrosion etc.Energy conservation, ... Panels are widely used in clean room as non-force bearing wall, roof and ceiling and as ... conductor, pharmaceutical, bio-tech and food processing etc. PU Sandwich Roof and Wall Panels