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SUMMARY OF PRINCIPAL ACCOUNTING POLICIES (Additional Information) (Details) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) shares | Dec. 31, 2014 USD ($) | Jan. 31, 2017 | Feb. 17, 2016 USD ($) | Feb. 17, 2016 CNY (¥) | Dec. 31, 2013 USD ($)
Basis of presentation |  |  |  |  |  |  |
Working capital | $ 176,400,000 |  |  |  |  |  |
Cash and cash equivalents | 15,987,478 | $ 14,490,011 | $ 7,068,483 |  |  |  | $ 7,831,084
Short-term bank borrowings, including current portion of long-term bank borrowings | 105,980,320 | 123,936,995 |  |  |  |  |
Capital commitments relating to purchases of property, plant and equipment | $ 4,700,000 |  |  |  |  |  |
Consecutive years in which net income and positive cash flow from operations generated | 3 years |  |  |  |  |  |
Current Ratio | 0.3 |  |  |  |  |  |
Net Cash Provided by (Used in) Operating Activities, Continuing Operations | $ 98,671,937 | 66,426,213 | 45,619,729 |  |  |  |
Restricted cash |  |  |  |  |  |  |
Restricted cash | 15,893,467 | 19,062,714 |  |  |  |  |
Inventories |  |  |  |  |  |  |
Inventory write-down |  | 62,422 | 175,568 |  |  |  |
Prepaid land use rights |  |  |  |  |  |  |
Lease Expenses | 557,162 | 595,716 | 628,052 |  |  |  |
Impairment of long-lived assets |  |  |  |  |  |  |
Long-lived asset impairment | 198,689 | 1,622,588 |  |  |  |  |
Impairment charges included in loss from discontinued operations | 200,000 | 1,600,000 |  |  |  |  |
Shipping and handling |  |  |  |  |  |  |
Shipping and handling costs | 3,147,594 | 2,708,962 | 2,054,786 |  |  |  |
Government subsidies |  |  |  |  |  |  |
Unrestricted cash government subsidies | 4,742,635 | 3,578,865 | 926,173 |  |  |  |
Government grants related to assets | 323,769 | 690,889 | 113,735 |  |  |  |
Foreign currency translation |  |  |  |  |  |  |
Aggregate amount of cash and cash equivalents and restricted cash denominated in RMB | 28,839,371 | 30,891,550 |  |  |  |  |
Noncontrolling interest |  |  |  |  |  |  |
Noncontrolling interest | 1,629,161 | $ 1,302,027 |  |  |  |  |
Treasury Stock |  |  |  |  |  |  |
Share repurchase program, authorized amount | 5,000,000 |  |  |  |  |  |
Number of shares repurchased | shares |  | 2,356,900 |  |  |  |  |
Purchase price of treasury stock |  | $ 1,350,164 |  |  |  |  |
Investment accounted for under cost-method |  |  |  |  |  |  |
Cost Method Investments | 581,581 |  |  |  |  |  |
Operating Leases, Future Minimum Payments Due | $ 2,943,822 |  |  |  |  |  |
Syed Fire Safety Service Co [Member] |  |  |  |  |  |  |
Investment accounted for under cost-method |  |  |  |  |  |  |
Cost Method Investment, Ownership Percentage |  |  |  |  | 15.29% | 15.29% |
Cost Method Investments |  |  |  |  | $ 581,581 | ¥ 4,038,900 |
Subsequent Event [Member] |  |  |  |  |  |  |
Basis of presentation |  |  |  |  |  |  |
Percentage Of Capacity Increase In Expansion Project |  |  |  | 48.00% |  |  |

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