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2009 Huichang obtained Certification of Invention Patent - concerning Hydraulic Pump Rotor |
Publish time: : 2012/4/2 17:33:46 |
Huichang Company obtained Certification of Invention Patent (concerning Hydraulic Pump Rotor), approved by the State Intellectual Property Bureau of the People's Republic of China on Oct.28th, 2009. |
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