The utility model has the advantages that a sewer pipe can be prevented from being blocked, and odour in the pipe can be prevented from throwing off to pollute air.
本实用新型具有能够防止下水管道被堵塞和防止管道中臭气散发出来污染空气的优点。
The utility model has the advantages that a sewer pipe can be prevented from being blocked, and odour in the pipe can be prevented from throwing off to pollute air.
本实用新型具有能够防止下水管道被堵塞和防止管道中臭气散发出来污染空气的优点。
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