The semiconductor industry is one of the most critical industries in electronic information industry chain, which provides critical basic materials for integrated chip industry, LED industry, the photovoltaic industry and other industries, a huge impact on the entire electronic information industry. Middle of last century, the invention of the integrated circuit and the successful development of silicon and silicon semiconductor transistors, causing the third technological revolution; the early 1970s quartz fiber material and GaAs lasers invention, the optical fiber communication technology to promote rapid development and gradually formed a high-tech industry, so that humanity has entered the information age.Semiconductor products are widely used in the electronics industry and the microelectronics industry for the production of transistors, integrated circuits, solid-state lasers and other precision of the original device. Some industry experts said,semiconductor materials can be divided into three generations. The first generation of semiconductor silicon; second-generation semiconductor gallium arsenide is represented; the third generation of semiconductor gallium nitride represented it in terms of conversion of electrical and optical outstanding performance, higher efficiency in terms of the microwave signal transmission, it can be widely applied to lighting, display, communications, and other major areas.Now the next wave of popular LED, gallium nitride semiconductor light-emitting diodes as the first major breakthrough in LED lighting industry, which has greatly boosted the metal gallium consumption. Currently GaN LED chip is usually based on sapphire or silicon carbide substrate wafer. This substrate LED chips a lot of deficiencies, if GaN wafer as a substrate, not only can effectively solve the heat problem is illuminated, but also the brightness per unit area increased by 10-fold. 2014 Nobel Laureate in Physics Shuji Nakamura noted, GaN on GaN LED technology will replace the existing first-generation LED technology in the near future become the mainstream LED development, and GaN substrate LED industry will become the final choice of lining end. With the declining price of GaN wafers, gallium nitride substrate of semiconductor lighting applications market will not be closed, gallium consumption will grow exponentially. In addition to LED lighting, electronic optoelectronic devices is its other major application market. Currently, gallium nitride (GaN) is becoming the mainstream semiconductor technology RF power device. In some military applications and microwave communications are widely used. According to the report released by the US strategic analysis section, said by the military early warning, driven monitoring, fire control radar aspects of the market, GaN demand increased.