Overcome the shortcomings of ordinary water discharge pipe, such as jamming.

弥补排水管经常堵塞不容易疏通，影响正常排水，蓄水。

youdao

Overcome the shortcomings of ordinary water discharge pipe, such as jamming.

弥补排水管经常堵塞不容易疏通，影响正常排水，蓄水。

youdao