The walls contain polystyrene and fiberglass thermal insulation and are sealed externally with white glass. The internal surface is a double layer of plasterboard.
墙体包含聚苯乙烯和玻璃纤维的热隔离，并且在外部空间使用白色玻璃封闭起来。内部表层是一个双侧的石膏板。
The material of the external layer of the cup is of insulation materials or materials coated with insulation paint and the internal layer and the external layer can employ the same material.
杯的外层材料最好是保温材料或者涂上保温涂料，但内、外层相同材料也可以。
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