... panels sincere 1993 with a great reputation. Both side metal specification: steel sheet bending width1000mm/1200mmcolorRAL No.the coating ... orderminimum order50tonstandardGB/T,ASTM,JIS &its equivalent the both metal meterialInner Material the sandwich panel thickness50,75,100,150,200mmVolume ... :xingfu industrial park,boxing county,shandong province in china Metal roofing/wall sandwich panels--Factory