Sulfur dioxide recycling and purifying technology is one of keystone projects in the 9th 5-year plan. It was checked and accepted after examines on 17th September. According to the experts' introduction, we now expel 20.9 million sulfur dioxide each year, which causes annual loss of 110 billion by acid rain. This sulfur dioxide recycling and purifying technology, developed by East China Science University, can help produce high quality fertilize with generating electricity. This technology not only reduces the cost of generating electricity, but also protects the environment.