1)PE, Dustproof,Security 2)single stick lable can not be get over after used 3)bottle ... ,no noise and no defects.Seal cuttingAfter cutting ,the single stick labels edge is smooth, no flash and silk glue. After ... sealing evenly, level off, without apparent ruffle, become warped edge, Stick label and 5 Gallon caps heat sealing are strength.when ...