... *width(mm)150*150,250*250,300*300,450*450,600*600,800*800,1000*1000,1200*1200,1000*2000 and so on.the ... including nitric acid & aqua fortis ;ii.good dielectric in mediums;iii.non-aging;iv.can be used in wide strength range ... ,especially corrosive situation.ii.dielectric material in kinds of frequency;iii.medium material of capacities;iv.insulation materials in electrics systems ...