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Connect the joints and flush with high-pressure water.
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Find a professional unclogging person.
Changing the pipeline is the long-term solution, but you have to do the work of the property, and the property will change it for you, which is also the case in our community, blocked N times, and finally forced the property to change the thick pipe.
Continue to check that the part you are leading to is not blocked, and the rest of the area is blocked.
This may be because the blocking object is at a depth greater than meters. It could also be blocked downstairs. You can get an elongated flexible shaft and try to unblock it.
The kitchen drain is blocked, what do you use to unblock it? Kitchen drain plug, you need to use a dredging machine to dredge... >>>More
1. Look through it yourself first, but pay attention to PVC or cast iron. >>>More