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Environment (Details Textual) | 12 Months Ended
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Dec. 31, 2017
Industrial waste water treatment [Member] |
Disclosure of Environment [Line Items] |
Percentage of distribution of environmental costs | 50.80%
Solid industrial residues [Member] |
Disclosure of Environment [Line Items] |
Percentage of distribution of environmental costs | 36.40%
Gas emission expenses [Member] |
Disclosure of Environment [Line Items] |
Percentage of distribution of environmental costs | 0.70%
Other environmental expenses [Member] |
Disclosure of Environment [Line Items] |
Percentage of distribution of environmental costs | 12.10%

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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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- Details
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