 1.The insulation paper is manufactured from 100% high quality sulfated insulating wood pulp. without sizing or used fillers. This paper is highly refinded and cleaned to ensure uniform thickness and formation. Pinholes, undispersed fiber bundles and tiny defects, It is allowed to exist for little Pinholes, Undispersed fiber bundles and Tiny defects if it doesn’t effect to meet the safety requirements in the manufacturing and applications of transformers and cables. ※It belongs to be a high-voltage grade insulating paper,and is suited for making electromagnetic wire of 500kv transformers and other electrial insulating equipments. 2.This paper has stable electrical and chemical properties, and high physical strength to meet the exact requirements of our valued customers. Our insulating paper available in nominal thicknesses of 75um and 125um, and in continuous rolls up to the widths of 625mm, (the roll diameter being 680mm-730mm), or other customized diameter and width of the purchase contracts. Specification: 3. nominal thicknesses： 75um and 125um 4.widths ：1000mm 5.roll diameter ：680mm-730mm  |