There are two kinds of factory affairs system, generally referring to the factory affairs system. The general factory is called the factory affairs department, the American capital is called the facilities department, and the Taiwanese capital is called the public works department, the general affairs department and the engineering department. However, there are many factory affairs. English is generally called Facility, or FAC for short.

Factory affairs system: divided into water (wastewater system. Pure water system, cooling water, process cooling water)

Electric power (high and low voltage distribution, weak current, BMS system)

Gas (compressed air, special gas, gas discharge) air conditioning HVAC system,

Factory affairs also involve factory facilities, public facilities and dust-free systems including factories.

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