Hyosung Heavy Industries said Wednesday that it has become the first in the domestic industry to surpass 10 trillion won (about $7 billion) cumulative production value for circuit breakers. The company held a ceremony Tuesday at its Changwon plant in South Gyeongsang Province to mark the achievement. Around 400 Hyosung officials attended, including CEO Woo Tae-hee, Kwon Ki-Yeoung, head of circuit breaker division, and Kim Jin-ho, manager of the Changwon plant. Hyosung started producing circuit b