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塑料检查井有什么优点和缺点呢？ - 工程设计 - 项目管理 - 氿上知道
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优点是：塑料检查井整体性较好，组装时二次加工工序较少，生产效率较高。
缺点是：产品规格受限，不易运输，用量不大，单件产品成本较高。