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Accounting Principles (Tables)
 12 Months Ended
Dec. 31, 2017
Text block1 [abstract]  
Summary of Depreciation Periods

The depreciation periods used are the following:

 

PROPERTY, PLANT, AND EQUIPMENT ITEM

    DEPRECIATION PERIOD  

Fixtures and improvements in structures

      9 years  

Research and development / production tools

      5 years  

Research equipment and technical facilities

      5 years  

Computer equipment

      3 years  

Office equipment and furniture

      5 years