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VARIABLE INTEREST ENTITY ('VIE') (Details 1) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Gross profit | $ 13,984,246 | $ 16,302,329 | $ 12,422,502
Net income | 8,281,017 | 9,073,954 | 7,919,408
Variable Interest Entity [Member] |  |  |
Revenues | 30,191,069 | 23,834,129 | 18,531,178
Gross profit | 13,984,246 | 16,302,329 | 12,422,502
Income from operations | 10,874,269 | 11,153,956 | 8,317,465
Net income | 9,831,118 | 10,747,395 | 7,919,408
Non-controlling interest | 1,242,324 |  |
Net income attributable to VIE's | $ 8,588,794 | $ 10,747,395 | $ 7,919,408

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