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It depends on the individual to get used to it. There is no particular age limit for this.
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Large sizes are brought with hand paper.
According to the loss caused by leakage, including waterproof maintenance costs, damage to other items caused by leakage, damage to decorative materials, etc.
Your question is a bit vague: toilet valves?
Is it a toilet flush valve? >>>More
Scientific studies have shown that normal people usually poop for 8 minutes, 12 minutes for pooping with a cigarette, and 20 minutes for going to the toilet with a cigarette and a mobile phone
The most feared thing is that there is a hand sticking out of the toilet... >>>More
Generally, around 300 can be copied to use, the glaze is not very good, and it is used more in tooling. >>>More