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Polysilicon is an important intermediate product in the silicon product industry chain and is the main raw material for the manufacture of silicon polishing films and solar cells. In 2005, the global polysilicon production reached 30,200 tons, and the production was highly concentrated in seven companies in the United States, Japan, and Germany. At present, there are only 4 polysilicon production lines in China. In 2005, the output was less than 300 tons. The scale of the device was small, the product quality was not high, and the unit energy consumption and cost were high. All of them were produced abroad.
With the rapid development of information technology and solar energy industry, the global demand for polysilicon grows rapidly. The market is in short supply, and the price has risen sharply. The situation of China's polysilicon industry is very serious. In 2005, the demand was 3,800 tons, while the output was less than 300 tons, and the vast majority still depended on imports. Due to the large demand, the price of imported polysilicon in China has increased from 20 US$/kg three years ago to the current 200 US$/kg.
The popularity of polysilicon products has led to a sudden increase in investment. At present, there has been an upsurge of polysilicon projects in China. In May of this year, the largest high-purity polysilicon project in Asia was laid in the foundation construction of Qujing, Yunnan. The first-phase project will have a scale of 3,000 tons/year and will reach 10,000 tons/year after three years. In addition, Sichuan, Henan, Liaoning, Ningxia, Inner Mongolia, Shandong and other provinces and regions are also planning to build or under construction of a number of polysilicon projects, it is expected that by 2010 the serious shortage of polysilicon in China will be eased.
However, experts believe that although China's polysilicon market is in great demand and its production of raw materials is rich in quartz stone reserves, polysilicon is an industry with high investment, high energy consumption, high risk and long payback period, and it has been blocked by foreign countries. Therefore, new projects have been built. We must be cautious. The key is to break the monopoly and blockade of foreign technology and vigorously develop technologies and technologies with independent intellectual property rights. Otherwise, we will fall into another cycle of repeated construction.
Due to the shortage of polysilicon market, there has been a sudden increase in investment in China. The academicians and experts of the Chinese Academy of Sciences and the Chinese Academy of Sciences who have participated in the China Silicon Materials Research and Silicon Industry Development Engineering Technology Forum recently held in Xi'an reminded that: China's silicon material industry must be carefully developed, and it can not be done overnight; the key is to master the core technology, otherwise it will be difficult Get rid of the situation subject to control.