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INTANGIBLE ASSETS, NET (Tables) | 12 Months Ended
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Dec. 31, 2014
INTANGIBLE ASSETS, NET |
Schedule of intangible assets |
As of December 31, 2014 |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net |
|  | $ |  | $ |  | $ |
Technical know-how |  |  | 1,621,897 |  |  | (1,130,136 | ) |  | 491,761 |
Computer software |  |  | 10,715,227 |  |  | (4,601,193 | ) |  | 6,114,034 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total intangible assets, net |  |  | 12,337,124 |  |  | (5,731,329 | ) |  | 6,605,795 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
As of December 31, 2013 |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net |
|  | $ |  | $ |  | $ |
Technical know-how |  |  | 1,627,777 |  |  | (1,004,715 | ) |  | 623,062 |
Computer software |  |  | 7,490,070 |  |  | (2,456,199 | ) |  | 5,033,871 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total intangible assets, net |  |  | 9,117,847 |  |  | (3,460,914 | ) |  | 5,656,933 |
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