Description
In 2005, it has got the unique model patent, which is issued by the state intellectual property office
of the P.R.C. the patent NO is: ZL 2005 20101822.3.in 2006, it has applied for the patent of invention.
The application NO is 200510049495.X.It has achieved 0-0.6MPa 100,000 times recycle fatigue test successfully.
