... cost Energy-saving low cost prefabricated modular house/sandwich wall panel (Manufacturer)is a kind of light weight energy saving ... reinforced calcium silicon board or cement calcium silicon board as panel, with cement, EPS, fly ash as fillers and forming ... coated steel sandwich board, gypsum block, wire spatial grid structure perlite board, perlite porous board etc. Size :2270mmx610mmx 60(75, 90, 100 ...