The CIF EPOXY BASE without resin , 16/10TH - 18 microns of copper has 2 sides and 200 x 300mm size.
High qualified stratified 8 layers of glass cloth MIL 13949 F standard Flammability class UL94V0 Moisture absorption <0.05% Arc resistance 60 sec Loss tangent 0.035 Thermal conductivity 0.3 W / mk