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Inventories (Details Textual) - USD ($) | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Inventories (Textual) |  |
Work in progress | $ 4,106,837 | $ 1,911,656
Finished goods | 2,635,764 | 2,238,854
Third Parties [Member] |  |
Inventories (Textual) |  |
Work in progress | 1,356,461 | 308,742
Finished goods | $ 208,731 | $ 103,024

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