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15. BUSINESS SEGMENTS (Details 2) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Revenue, Major Customer [Line Items] |  |  |  |
Revenue from major customer | $ 47,600,767 | $ 49,350,070 | $ 82,096,217 | $ 84,260,899
Shandong Morui Chemical Company Limited [Member] |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenue from major customer | $ 5,651 | $ 5,086 | $ 9,861 | $ 8,951
Percentage of Total Revenue (%) | 11.90% | 10.30% | 12.00% | 10.60%
Shandong Morui Chemical Company Limited [Member] | Bromine Segment [Member] |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenue from major customer | $ 3,269 | $ 2,382 | $ 5,692 | $ 4,072
Shandong Morui Chemical Company Limited [Member] | Crude Salt Segment [Member] |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenue from major customer | 686 | 731 | 1,172 | 1,195
Shandong Morui Chemical Company Limited [Member] | Chemical Products Segment [Member] |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Revenue from major customer | $ 1,696 | $ 1,973 | $ 2,997 | $ 3,684

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