A case cover corresponding to an opening of the box body is also a double-layer stainless steel casing and an insulation material layer is equipped in a mezzanine of the casing.
与箱体上开口对应的箱盖也为双层不锈钢壳体，其夹层内设有保温材料层。
A case cover corresponding to an opening of the box body is also a double-layer stainless steel casing and an insulation material layer is equipped in a mezzanine of the casing.
与箱体上开口对应的箱盖也为双层不锈钢壳体，其夹层内设有保温材料层。
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