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Condensed consolidated statements of changes in shareholders equity - USD ($) | Common stock issued [Member] | Donated shares [Member] | Additional paid-in capital [Member] | Statutory reserves [Member] | Accumulated deficit [Member] | Accumulated other comprehensive loss [Member] | Treasury shares [Member] | Total
--- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2015 | $ 17,290 | $ 14,101,689 | $ 138,405,110 | $ 1,230,511 | $ (129,285,454) | $ (979,048) | $ (4,066,610) | $ 19,423,488
Beginning Balance (Shares) at Dec. 31, 2015 | 17,289,699 |  |  |  |  |  | (144,206) |
Net loss |  |  |  |  | (10,519,521) |  |  | (10,519,521)
Common stock issued to investors | $ 2,207 |  | 5,514,393 |  |  |  |  | 5,516,600
Common stock issued to investors (Shares) | 2,206,640 |  |  |  |  |  |  |
Share-based compensation for employee and director stock awards |  |  |  |  |  |  |  | 1,088,733
Common stock issued to employees and directors for stock awards | $ 193 |  | $ (193) |  |  |  |  |
Common stock issued to employees and directors for stock awards (Shares) | 193,335 |  | 1,088,733 |  |  |  |  |
Foreign currency translation adjustment |  |  |  |  |  | (419,304) |  | (419,304)
Ending Balance at Sep. 30, 2016 | $ 19,690 | 14,101,689 | $ 145,008,043 | 1,230,511 | (139,804,975) | (1,398,352) | $ (4,066,610) | 15,089,996
Ending Balance (Shares) at Sep. 30, 2016 | 19,689,674 |  |  |  |  |  | (144,206) |
Beginning Balance at Dec. 31, 2016 | $ 19,745 | 14,101,689 | 145,353,067 | 1,230,511 | (141,999,372) | (1,961,461) | $ (4,066,610) | 12,677,569
Beginning Balance (Shares) at Dec. 31, 2016 | 19,744,675 |  |  |  |  |  | (144,206) |
Net loss |  |  |  |  | (10,024,349) |  |  | (10,024,349)
Common stock issued to investors | $ 6,404 |  | 9,598,874 |  |  |  |  | 9,605,278
Common stock issued to investors (Shares) | 6,403,518 |  |  |  |  |  |  |
Share-based compensation for employee and director stock awards |  |  | 635,530 |  |  |  |  | 635,530
Common stock issued to employees and directors for stock awards | $ 219 |  | (219) |  |  |  |  |
Common stock issued to employees and directors for stock awards (Shares) | 219,330 |  |  |  |  |  |  |
Foreign currency translation adjustment |  |  |  |  |  | 629,073 |  | 629,073
Ending Balance at Sep. 30, 2017 | $ 26,368 | $ 14,101,689 | $ 155,587,252 | $ 1,230,511 | $ (152,023,721) | $ (1,332,388) | $ (4,066,610) | $ 13,523,101
Ending Balance (Shares) at Sep. 30, 2017 | 26,367,523 |  |  |  |  |  | (144,206) |

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