In 2008, the market size of online water quality analysis instruments in China was 1.6 billion yuan (sales from suppliers, excluding value-added tax, the same below), an increase of 14.3% compared to the market size of 1.4 billion yuan in 2007, with a slower growth rate compared to the previous two years. Although the market size is gradually increasing, the application level of online analytical instruments in China, as an important tool for improving industrial technology, is still relatively low compared to industrialized countries. With the urgent need for the improvement of China's industrial technology level and the implementation of environmental protection policies, in the next 3-5 years, although the growth rate of the automation market will significantly decline compared to previous years, online water quality analysis instruments will still achieve relatively high growth.