Recovery and utilization of waste polymer materials are two important planning targets for many countries to prevent environmental pollution and develop renewable resources.

  • 回收和综合开发利用废旧高分子材料的工作已经成为许多国家防止环境污染和开发再生资源的两大规划目标。

  • 互联网 2025-03-05 20:57:50

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