www.kindinsulation.com leading Pre compressed Press Board,Transformer insulating paper board,insulating cardboard, Electrical Insulation paper,Transformer Pressboard,Laminated Pressboard,Transformer insulating paper board,from 100% Unbleached sulphate wood pulp.Cardboard makes which on the intermittent type board machine.used in transformer，Excellent dielectric properties, good heat resistance,high mechanical properties. Thickness：0.50，0.80，1.00，1.50，2.00，2.50，3.0,4.0mm. through ISO 9001.UL,SGS etc. certification .competitive quote in china .Email saleinsulation at kindinsulation.com