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Property, Plant and Equipment, Net (Details Textual) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Property, Plant and Equipment (Textual)        
Property, plant and equipment, disposals $ 4,564 $ 3,300 $ 6,394 $ 6,730
Depreciation expense $ 564,522 $ 280,692 $ 1,128,327 $ 560,588