Quality standard: the quality of our electric insulating paperboard comply with PRC'S national standard of GB/T 19264.3 - 2003/IEC 60641-3-1:1992.

 Our pre compressed pressboard is made of 100% unbleached sulfate pulp, with performance of high density, high mechanical strength, high electric strength and low compression index, it is a good kind of solid insulating material, widely used as electric industrial board for transformer, reactor mutual inductance ware, electric device and etc.
      Thickness (mm):1.0   1.5   2.0   2.5   3.0   4.0   5.0   6.0   7.0   8.0
      Standard size: 6400*3200nn, 4400*2200 (Customized size is available)