1.type:Al/Zn metallized film 2.Safety Anti-explosion Film 3.margin value:1.5,2.0,2.5mm 4.Ce,UL,TUL,VDE certified DetailsSpecification item unit nominal valuerollmmroll diameter inner diameter 75 outer diameter 150--350(The specific diameters can be customized. )thicknessµm3,4,5,6,7,8,9,10,12width×margin valuemmWidth:30,35,37.5,40,45,50,55,60,65,70,75,80mm margin:1.5,2.0,2.5