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Patent certificate for invention
Patent certificate for invention: a new preparation method aiming at ensuring the coaxiality of cooling deep hole and external forming side of preform mold
Patent application date: 2007-08-30
Patentee: Guang Dong Xing Lian Precise Machinery Co., Ltd.; South China University of Technology
Authorization publication date: 2009-04-15
Patentee: Guang Dong Xing Lian Precise Machinery Co., Ltd.; South China University of Technology
Authorization publication date: 2009-04-15