（1）、部件采用热塑性塑料一次注塑而成，耐腐蚀、耐酸碱、使用寿命长。 通过国家化学建筑材料测试中心测试，经久耐用；（2）、保护环境 各个管口连接处均采用柔性连接，连接灵活方便，有优越的水密性，彻底杜绝雨污水渗漏、泄漏，防止对地下水的二次污染。安全环保；（3）、管道与井座柔性连接，管道与井座的粘土共同运动、均匀沉降，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。

(1), part of the thermoplastic plastic injection molding, corrosion resistance, acid and alkali, long service life. Through the national chemical building materials testing center testing, durable; (2) protect the environment, all the connections are connected with flexible joint and flexible and convenient, has excellent water tightness, completely prevent rain water leakage, leakage, prevent the two pollution of groundwater. Safety and environmental protection. (3) flexible connection of pipeline and well seat, joint movement of pipe and well clay and uniform settlement can well solve the problem of uneven settlement caused by connection of traditional inspection wells and plastic pipes, and effectively prevent ground subsidence.