Most of them are leaking without them knowing or know it. They have a team of people who just go around Taiwan every year, have a tour of Taiwan, and listen using these kind of amplifying devices of where the water pipes are leaking.
Most of them are leaking without them knowing or know it. They have a team of people who just go around Taiwan every year, have a tour of Taiwan, and listen using these kind of amplifying devices of where the water pipes are leaking.