Key words: ball valve,gate valve,globe valve,butterfly valve,china valve

The valve is the equipment that can make the media (liquid, gas, powder) flow and stop and is also able to control the flow rate. It is the indispensable fluid control equipment in the national economy sectors such as Oil, chemical, power plants, long-distance pipeline, shipbuilding, nuclear industry, all kinds of low-temperature projects, aerospace and marine oil exploitation. After many years development, there are about 6000 valve manufacturers in china, where the number is the most in the world. The valve is used as the transportation component. With the development of the national economy, the valve industry has been developed very quickly in recent years.

 From January to November in 2007, the gross output of industry value in the Chinese valve and cock manufacturing industry is 84,288,398,000 Yuan, which has increased by 31.74% compared with the same period last year. The product sales income is 80,571,055,000 Yuan, which has increased by 29.36% in comparison with the same period last year. The gross profit is 6,389,712,000 Yuan, which increased by 44.16% compared with the same period last year.

From January to November in 2008, its gross output of industry value, product sales income and gross profit are 103,858,364,000 Yuan, 99,605,495,000 Yuan and 6,389,712,000 Yuan which have increased by 26.04%, 26.30%, and 17.02% respectively in comparison with the same period last year.