What does a plumber do?

A plumber is a worker who is responsible for the installation, overhaul, maintenance, management and use of water pipeline equipment.

Plumbers can be divided into installers and maintenance workers. At present, there are many people doing installation and few people doing maintenance, which is mainly a technical problem, but now it is not a purely technical problem. The most popular maintenance should be water pipe cleaning, with low cost, high profit and easy work.