Polyurethane sandwich panels polystyrene sandwich panels how to identify? 75 models Price / square?
Very good to distinguish, there is particles is polystyrene.
Polystyrene foam and foam polyurethane alone from the appearance is very easy to identify, the flammability of the former flammable and drip, the latter flame from the fire self-extinguishing and only carbonized insoluble drops. Density is also different, do not know what you mean 75 models. Price, then, the specific specifications of polyurethane color sandwich panels in general 120-170 range; if it is outside the wall insulation board, the price is generally ranging from 50-100.
