1耐酸碱腐蚀，耐老化，使用寿命长。 2、 安全环保，密封性好。密封性好能能杜绝雨污水渗漏、泄漏，以防止地下水污染。 3、 均匀沉降，抗压。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。4、 施工方便快捷。采用分体组装结构、井筒可拆卸、调整，适应各种安装深度要求，有效降低成本，大大提高施工进度。

1 resistance to acid and alkali corrosion, aging resistance, long service life. 2, safety and environmental protection, good sealing. Good sealing ability can prevent leakage and leakage of rain water to prevent groundwater pollution. 3, uniform settlement, compression. The pipeline and the well seat are flexibly connected. The joint movement between the pipeline and the clay of the well block solves the problem of uneven settlement caused by the connection between the conventional inspection well and the plastic pipe well, and effectively prevents the ground collapse. 4, the construction is convenient and quick. The structure of the split assembly, the wellbore can be disassembled and adjusted to meet the requirements of various installation depth, reduce the cost effectively, and greatly improve the construction progress.