GPO‑3 sheet - NOT cellular polymer(Not porous/foam polymer)
Cellular polymer/cellular plastic=foamed plastic, artificially introducing a large number of bubble holes (open/closed) inside, such as foam PU, foamed PVC, hollow solar panel
GPO-3 sheet essence
Non cellular, dense solid thermosetting laminate
No foaming process, resin completely infiltrates fiberglass felt, hot pressed and compacted, almost without pores; Density approximately 1.81-1.83 g/cm ³
Equivalent to IEC60893-3-3 UPGM203, fiberglass felt reinforced unsaturated polyester composite material
