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什么是聚氨酯树脂泡沫塑料
什么是聚氨酯树脂泡沫塑料
2025-03-16 07:34:27
推荐回答（1个）
回答（1）：
聚氨酯树脂泡沫塑料大概分两类，一是聚氨酯硬泡（保温隔热材料），一是聚氨酯软泡（如海绵）
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