Sandwich Panel, Roofing Sheet, C/Z Purlin manufacturer / supplier in China, offering PU/PIR /Rockwool Standing Seam Roof Sandwichpanels for Solar Photovoltaic Solutions, PU/PIR /Rockwool Roof Sandwichpanels for Solar Photovoltaic Solutions, Thermal/Heat Insulation Waterproof PU/Polyurethane Sandwich Red Panel for Container/Villa/Factory and so on.