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v3.19.1

Environment (Details Textual) | 12 Months Ended
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Dec. 31, 2018
Industrial waste water treatment [Member] |
Disclosure of Environment [Line Items] |
Percentage of distribution of environmental costs | 51.64%
Solid industrial residues [Member] |
Disclosure of Environment [Line Items] |
Percentage of distribution of environmental costs | 33.31%
Gas emission expenses [Member] |
Disclosure of Environment [Line Items] |
Percentage of distribution of environmental costs | 1.05%
Other environmental expenses [Member] |
Disclosure of Environment [Line Items] |
Percentage of distribution of environmental costs | 14.00%

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- References No definition available. + Details
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- Definition The percentage of distribution of environmental activities among various activities. + References No definition available. + Details
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- Details
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- Details
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- Details
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Period Type: |

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- Details
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Period Type: |