Do you want to talk to the property about the closed water test?

Generally, it is not necessary. The property belongs to the maintenance area. There is management responsibility during the renovation.

Do a closed water test, mainly to check the waterproof.

Need confirmation from the downstairs residents. It's no use looking at the property because there is a leak downstairs. The actual use is the residents downstairs.

Usually we do closed water test and contact downstairs through the property. We don't usually have contact information downstairs.

It can be said that it is mainly downstairs.

I hope to give you a reference.