Affected by the macroeconomic environment, China's inverter market in 2012 is not ideal. According to the company announced 2012 earnings, ABB Group sales in 2012 was about 3.7 billion yuan, Siemens sales of 3.4 billion, while the state-owned inverter brand leader Huichuan inverter business sales of 897 million, of which high-pressure Inverter business is about 15 million, INVT sales of 618 million yuan. According to the statistics of research institutes, the market potential of inverters in China is about 120 billion yuan-180 billion yuan. At present, there are about 300 inverters manufacturers (including foreign companies) in our country and the salesmen are about 5000. However, the domestic manufacturers of low-voltage inverters occupy only about 28% -30% of the market share, of which the major is Guangdong Shenzhen Gathered, occupy about 70% of the market. Low market share of state-owned inverter brand has always been the heart of the domestic frequency conversion enterprises pain, lack of R & D capabilities, lack of technology, low industry concentration, industrial development structure is irrational, most of the inverter core components rely on imports and other factors limit China Domestic inverter business growth and scale. In response, Zhou Haoliang, director of the Bureau of Electrical Engineering of the former Ministry of Machinery Industry and honorary chairman of the China Electrotechnical Society once said: "In order to develop and seek growth, domestically-made frequency converters should vigorously promote the application of AC variable frequency speed regulation technology and expand the application fields of frequency converters , Improve product quality, promote the breakthrough of the core technology and lead, optimize the industrial structure of the inverter and transform the existing development mode. " "In fact, the current domestic advocacy of industrialization, information technology, urbanization, agricultural modernization has been the case for a long time ago, the existing domestic-made inverter quite a mixed bag, the quality level is uneven, product quality are not, how to talk about the development of it. China's inverter operation provides a huge market and development space, at least the next five years, China's inverter market demand will continue to grow exponentially. " Inverter development, technology promotion is the core driving force, and China's frequency conversion technology to power electronic power conversion technology, microelectronic control technology as the core will be more in the future development of the inverter technology will have better development prospects . It is understood that Mr. Zhou Heliang will be in the May 20 "2013 Inverter Industry Chain Summit Forum" to "vigorously promote the development of application of AC variable frequency speed control technology" as the title, on the inverter upstream industry chain development reviews, and Will be the scene of the audience to communicate and interaction. About the inverter industry chain : Inverter industry chain covers the entire industry line of the inverter in upstream of the inverter (inverter raw materials, component suppliers), inverter manufacturers, inverter downstream applications and other areas of the inverter.