... 进口取代 import substitution 进口取代量 output of import substitute 进口取代潜力 import substitution potential ...
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国内市场因受其他品种塑料的取代竞争，需求不旺，且受进口量和进口价影响，价格逐年走低。
The substitution by other plastic products has led to a sluggish demand of polystyrene in the domestic market. Its price was going down with the impact of the import volume and import price.
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