Dongguan Houjie Pingliang Distance Vocational Training School. Foxconn inverter maintenance technology learning place is Dongguan Houjie Pingliang Remote Vocational Training School, which was founded in 2000. Teaching major is industrial circuit board maintenance training (frequency converter, servo driver. Compared with common relay and contactor control circuits, inverters are widely used in industrial automation control, scientific automation and mechanical automation.