Recently, Longi Green Energy Technology Co.Ltd(601012) once again raised the price of its monocrystalline silicon wafer by 5.7% – 6.1%, which not only reflects the rise in the price of raw materials, but also reflects the strong demand for photovoltaic in the lower reaches. From the beginning of last year to the beginning of this year, the overall price increase of silicon material was more than 160%, and the increase reached about 200% at the highest price. At the beginning of this year, the price of silicon material rose again. In the face of the rising trend, some middle and downstream enterprises continue to research and develop technology in order to reduce costs and increase efficiency. At the same time, with the expansion of the application scope of photovoltaic power generation, there is a temporary shortage of silicon and the price increases. The rapid development of photovoltaic industry has prompted many enterprises to expand production one after another. It is understood that although the photovoltaic industry is developing rapidly, the competition pattern is also intensifying. With the gradual release of the expanded capacity, the photovoltaic industry already has the hidden worry of overcapacity.