工厂广播系统，门禁系统和其他零星电气设备的维护保养。
Plant public address, Access door controller, and other miscellaneous electrical equipment maintenance.
商业设备：电动门禁，银行设施。
Business Equipment: Electric Gate, Banking Facility, ATM, Vending Machine.
商业设备：电动门禁，银行设施。
Business Equipment: Electric Gate, Banking Facility, ATM, Vending Machine.
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