The heat-preservation ball can be used as filling for a heat-preservation brick, and the heat-preservation brick has good effects on heat preservation, sound insulation and damp resistance.
用这种保温球作为保温砖的填充物，制成的保温砖具有较好的保温、隔音、防潮效果。
The heat-preservation ball can be used as filling for a heat-preservation brick, and the heat-preservation brick has good effects on heat preservation, sound insulation and damp resistance.
用这种保温球作为保温砖的填充物，制成的保温砖具有较好的保温、隔音、防潮效果。
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