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Product Invention Patent and Manufacturing Technique Patent
 

             PATENT NO. ZL200410088659.3                                        PATENT NO.  ZL200710161571.3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

               PATENT NO. ZL201010188523.5                                       PATENT NO. ZL201320792792.1

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