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5. INTANGIBLE ASSETS (Details Narrative) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]        
Amortization expense $ 92,337 $ 92,337 $ 184,754 $ 184,754