... Actual Units Produced(Previous Year) Voltage Regulator, Circuit Breaker, AC Contactor Voltage Regulator 50,000 Pieces / Month, Circuit Breaker 200,000 Pieces / Month, AC ... Contactor 30,000 Pieces / Month Voltage Regulator 550,000 Pieces, Circuit Breaker 1,200,000 Pieces, AC Contactor 200,000 ...