... 250mm,applicable to protection of certificate,photos,documents and office supplies,and for photocopying ItemUnitSpectestThickness tolerance%≤3GB/T 6672- ... :30mic~250mic Use:Stable performance,applicable to laminating and card-protecting film. Appearence:Transparent pet film. ... name, axle number, thickness, length, width, weight and date of productionStorage & Transport: Polyester film should be ...