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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2018
Disclosure Of Summary Of Significant Accounting Policies [Abstract] |
Estimated Useful Lives of Assets | Depreciation is calculated on a straight-line basis over the estimated useful lives of the assets as follows:
► Buildings | 20-30 years
► Building improvement | 3-20 years
► Machinery and equipment | 4-20 years
► Motor vehicles | 3-10 years
► Office equipment | 2-20 years

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- Definition The tabular disclosure of property plant and equipment estimated useful life. + References No definition available. + Details
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- Definition Disclosure of summary of significant accounting policies. + References No definition available. + Details
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