会计 来源:互联网 时间:2023-05-31 20:54:04
【资料图】
1、海绵由木纤维素纤维或发泡塑料聚合物制成。
2、另外,也有由海绵动物制成的天然海绵,大多数天然海绵用于身体清洁或绘画。
3、另外,还有三类其他材料制成的合成海绵,分别为低密度聚醚(不吸水海绵)、聚乙烯醇(高吸水材料)和聚酯。
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