Rubber seal is small, but it make it become a defense, chemical, petroleum, coal, transportation and machinery manufacturing, and other national economy major industries based components and accessories, occupies a very important position in the national economy development. In recent years, with the rapid economic growth, rubber seal manufacturing industry has maintained two digit growth. Data show that in 2011, China rubber sealing parts manufacturing industry scale (above enterprises (according to the National Bureau of statistics caliber, sales income of more than 2000 million yuan) to achieve total industrial output value of nearly 10 billion, an increase of more than 20%.
At present, China rubber sealing parts manufacturing industry scale (annual income 20 million yuan) above more than 150 enterprises, domestic rubber seal industry overall present small-scale enterprises, the low level of technology development situation. From the point of view of economic types of enterprises, private, foreign-funded enterprises accounted for more than 95%, is the industry's main economic type. At the same time, enterprises basically concentrated in the East China region, from the point of view of the number of enterprises, sales revenue and assets scale, East China occupy the a considerable share of the market set moderately higher.