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on january 06th, a patent certificate authorized by state intellectual property office of p. r. c in 12,12,2012 was received by sirui. the patent number is zl 2008 1 0232027.8, while the name is “one prepare technology of cucr25zrte contact material with vacuum infiltration”.
application of this patent makes significant technical contribution to improvement of welding resistance of vacuum switch as well as design and manufacture of low voltage vacuum switch.
congratulations to the achievements in technical innovation, independent intellectual property rights development and intellectual property rights protection.