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The price varies in different regions, and the project on our side is about 120. About 200 for home.
There are some supermarkets that sell them, and they seem to be called toilet cleaners! If it doesn't work, the whole acid will be gone, I remember that our factory used the waste acid from the laboratory
There are many kinds of flush toilets, with prices ranging from 200 to tens of thousands. Our home improvement generally chooses 700-1200 at this price.
You can take a look at my space. There is an article dedicated to this topic. This is a common fault of ordinary toilet inlet valves. It won't take long to use the pants. It is easy to have more than water or no water ingress. >>>More
It could be the reason why the sewer is a little clogged.
The drain valve is not closed tightly; The float does not float or is connected to the water stop valve and is broken. >>>More