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It is a problem of the quality of the house, which is of course borne by the developer.
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If it is not installed and modified, the real estate developer is responsible for it, and it is not clear that the responsibility is not clear after the decoration.
The outlet must be lower than the inlet, otherwise the sewage will be backfilled.
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The cleaner should be automatic and constant temperature, without hot water, cold water and power supply if necessary.
The water inlet is the part where the inner and outer wires are butted, and there is a rubber washer inside, which can be tightened to see. If it still drips, the gasket or connector is damaged.
Focus on inspecting the two parts of the toilet tank to see what is wrong with that part. >>>More