... to protection of certificate,photos,documents and office supplies,and for photocopyingItemUnitSpectestThickness tolerance%≤3GB/T 6672- ... 16958-2008specification:30mic~250micUse: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 ...