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ALLOWANCE FOR DOUBTFUL ACCOUNTS (Tables) | 12 Months Ended
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Dec. 31, 2014
Allowances for accounts receivable |
ALLOWANCE |
Schedule of allowances |
|  | Years Ended December 31, |
|  | 2012 |  | 2013 |  | 2014 |
|  | $ |  | $ |  | $ |
Beginning of the year |  |  | 9,505,481 |  |  | 47,582,217 |  |  | 38,482,827 |
Allowances made (reversed) during the year, net |  |  | 43,240,595 |  |  | (1,897,423 | ) |  | (5,843,084 | )
Accounts written-off against allowances |  |  | (5,325,908 | ) |  | (7,877,676 | ) |  | (8,677 | )
Foreign exchange effect |  |  | 162,049 |  |  | 675,709 |  |  | (814,166 | )
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Closing balance |  |  | 47,582,217 |  |  | 38,482,827 |  |  | 31,816,900 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Allowances for advances to suppliers |
ALLOWANCE |
Schedule of allowances |
|  | Years Ended December 31, |
|  | 2012 |  | 2013 |  | 2014 |
|  | $ |  | $ |  | $ |
Beginning of the year |  |  | 38,123,721 |  |  | 38,545,487 |  |  | 40,046,830 |
Allowances made (reversed) during the year, net |  |  | 370,622 |  |  | 855,066 |  |  | 4,349 |
Foreign exchange effect |  |  | 51,144 |  |  | 646,277 |  |  | (2,315,751 | )
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Closing balance |  |  | 38,545,487 |  |  | 40,046,830 |  |  | 37,735,428 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Allowances for other receivables |
ALLOWANCE |
Schedule of allowances |
|  | Years Ended December 31, |
|  | 2012 |  | 2013 |  | 2014 |
|  | $ |  | $ |  | $ |
Beginning of the year |  |  | — |  |  | 756,062 |  |  | 887,024 |
Allowances made (reversed) during the year, net |  |  | 752,928 |  |  | 107,533 |  |  | (52,671 | )
Foreign exchange effect |  |  | 3,134 |  |  | 23,429 |  |  | (4,751 | )
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Closing balance |  |  | 756,062 |  |  | 887,024 |  |  | 829,602 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​

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- Definition Tabular disclosure of financing receivables (examples of financing receivables include loans, trade accounts receivable and notes receivable) and activity in the allowance for credit losses account. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524 + Details
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