(Outlining wiring has always been the job of the decorator. With the increasing variety of home appliances and the increasing popularity of home networking, some professional wiring companies that introduce equipment from foreign or professional manufacturers and specialize in home wiring are quietly emerging in the home improvement business. At the same time, when using the general wiring management system, everyone often encounters such and such problems, so it is still very important to understand the household general wiring system.)
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