Polystyrene foam shall be used for protecting insulation.
聚苯乙烯泡沫塑料应被用于保护绝缘。
2
The walls contain polystyrene and fiberglass thermal insulation and are sealed externally with white glass. The internal surface is a double layer of plasterboard.
Polystyrene foamed plastic and polyurethane hard foam is the influence of the thermal insulation system of fire prevention safety factors of the functioning of the hub.