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            Company got four national patents
            文章来源:未知 ?????发布者:admin
            To enhance the core competitiveness of enterprises, companies continue to increase R & D investment, enhance technology, "tube descaling machine " was granted utility model patents by the Intellectual Property Office of PRC on October 27, 2010, patent No: ZL200920279192.9. Previously, the company declared "the steel giant billboards on three sides, ""concrete piles for the detection of steel building systems " and "grid cutting tube groove machine" were granted a patent on October 21, 2009, December 16,2009  and July 21,  2010 by the State Intellectual Property Office, patent number is ZL200820233020.3, ZL200820224997.9 and ZL200920279191.4.
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