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No, it won't. Ordinary cigarette butts don't have that much energy to burn PVC. PVC itself is flame retardant, so if you're worried about pouring some water into your sewer pipe, it's not a big problem.
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Then he didn't pinch it, and this worker is too irresponsible.
It is recommended to re-do the toilet piece. It should be a leak in the pipe. Remove the toilet bowl and pour water from the pipe to see if there's any reaction underneath. >>>More
In your case, I suspect it's a leak in the pipes in the wall. It may not be big, but the leak, you observe it for a few days, and if it does, it will continue to wet the walls.
It's okay, if you want, I'll ask our company's supplier and make one for you.
Yes, you will definitely win the case.
If the living room is well lit, pick a wallpaper that matches the furniture and doors, but your question is not very clear.