1.Pollution free material,non-toxic 2.Temperature distributed evenly&long lasting shisha 3.pre-cut round or square(perforate) Specification:Alloy:8011-O/H16/H18/H22/H24Thickness:12-40micsize:100mm,120mm,150mm,etcShape:pre-cut round or square(perforate or not)Certificate:SGS,FDA,ISO9001-2000,LFGB,BVCharacteristic:Pollution free material,ECO-friendlyEspecially for social hookah/shisha ...