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COMMITMENTS AND CONTINGENCIES (Operating Lease and Capital Commitments) (Details) - CNY (¥)
6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Future minimum payments under non-cancelable operating leases:    
2018 ¥ 56,196,390  
2019 26,314,243  
2020 8,793,298  
2021 6,659,670  
2022 4,501,221  
Thereafter 6,200,000  
Total 108,664,822  
Rental expenses 5,575,663 ¥ 11,665,947
Capital Additions [Member]    
Future minimum payments under non-cancelable operating leases:    
Commitments to purchase machineries ¥ 2,626,090,504