Presspan/press paperboard is made from 100% superior sulfate insulating wood pulp. Characters and Application: This product has high chemical purity, excellent elongation,good Mechanical and dielectric Strength. It can be used for oil-immersed transformers, capacitors,reactors and switches. Specification: Thickness: 0.1mm-0.5mm, 0.5mm-4mm Size: press paper (1000mm width by roll), pressboard(1000mm*2000mm by sheet). Color:natural brown, cyan, red