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ACCOUNTS RECEIVABLE, NET-THIRD PARTIES (Schedule of Accounts Receivable) (Details)
Dec. 31, 2017
CNY (¥)
Dec. 31, 2017
USD ($)
Dec. 31, 2016
CNY (¥)
Dec. 31, 2015
CNY (¥)
Dec. 31, 2014
CNY (¥)
ACCOUNTS RECEIVABLE, NET-THIRD PARTIES [Line Items]          
Accounts receivables ¥ 4,762,291,432   ¥ 5,130,289,380    
Allowance for doubtful accounts (264,656,904)   (376,574,061) ¥ (335,713,383) ¥ (428,570,077)
Accounts receivable, net 4,497,634,528 $ 691,273,770 4,753,715,319    
Amount of accounts receivable pledged as collateral for borrowings ¥ 78,951,541   ¥ 0