... degree),with good dielectric stability at high humidity,With ROSH Certification Laminated Sheet( Epoxy Glass Cloth Laminated Sheet,FR4 Sheet) ... impregnated with epoxy resin by procesing under pressure and heat.It is insulation class B(130 degree).With high mechanical ... at medium humidity and good dielectric stability at high humidity,it is applied to electricmotors,mechanical lines,electron lines and ...