The utility model has the advantages of reasonable structural design, and installation security, solving the effluentseepage problem of the joint for pipe fittings.
本实用新型结构设计合理，安装安全可靠，解决了管件接头的污水渗漏问题。
2
For residential districts are different from each other in built-up area and planning, the causal building of catch pits will cause effluentseepage and groundwater pollution.