In recent years through scientific and technological research

In recent years through scientific and technological research , technology transfer , technological innovation, liquid tight many companies within the industry has formed the scale production, product standards continue to improve product quality significantly improved , the market has been expanding . According to statistics, in 2003 the output value of fluid sealing industry $ 11 billion , especially in hydraulic, pneumatic Hydraulic tube fittings industry output has ranked first in the developing world . It is predicted that by 2005 China liquid tight industry output will reach 15 billion yuan , in 2010 to reach 27 billion yuan . Industry output in 2003 increased by 30% , based on the industry this year, liquid tight production and market situation continues to improve . According to the 294 major companies in the industry statistics show that from January to July industrial output value of 9.398 billion yuan , up 25.65% over last year ; profit 823 million yuan , an increase of 36.49% ; 1 to June total order amount of 83.75 billion yuan, up 23.12% over last year .The overall economic health of the industry healthy, stable , showing three main characteristics: First, the sub- sectors are more substantial growth. Hydraulic industry output grew 23.61% , hydraulic industry output grew 65.62% , air industry output grew 43 percent , the sealing industry output grew 12.73% .