In 2011, the high-voltage inverter market reached 6.86 billion Yuan and a year-on-year growth of was 40.5%. Due to the effective implementation of the policy of promoting energy conservation in 2011, and government had took positive measures to promote the upgrading of industrial structure, the high-voltage inverter industry was showing rapid growth throughout the year. 2011 high-voltage inverter orders increased significantly, and the growth rate was higher than the growth rate of sales. Besides, the gross margin was still declining.