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.  【 Close 】  【 Print 】 Related News  · AUTO SHANGHAI 2013    ---    [ 2013/04/21 ]  · Motortec Automechanika Iberica 2013    ---    [ 2013/03/09 ]  · Automechanika Shanghai 2012    ---    [ 2012/11/27 ]  · SEMA 2012    ---    [ 2012/09/21 ]