First, knock off the parts that have been done before, then consider the layout of water pipes, make them waterproof, choose appropriate materials, and reserve the position of bolt switches. After these are done, there is basically no big problem.
Before water and electricity installation in shops, it is best to do a good job in the design of water and electricity transformation in shops, pay attention to the layout of water pipes and circuits and the positioning of cable arrangement, so as to facilitate construction and later maintenance.