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塑料检查井的材料是高密度聚乙烯塑料无毒无味，使用后可回收利用。属于化学环保建材，符合国家环境保护的大政方针。管道与井座柔性连接，管道与井座的粘土共同运动、很好的解决了传统检查井与塑料管道连接所产生的不均匀沉降问题，有效防止地面塌陷。
The material of plastic inspection well is high-density polyethylene plastic, which is non-toxic and tasteless, and can be recycled after use. It belongs to chemical environmental protection building materials and conforms to the general policy of national environmental protection. The flexible connection between the pipeline and the well seat and the common movement of the clay between the pipeline and the well seat can solve the problem of uneven settlement caused by the connection between the traditional inspection well and the plastic pipeline, and effectively prevent the ground from collapsing.