Property, plant and equipment -Depreciation (Details) - USD ($) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
|
| Property, Plant and Equipment [Abstract] | ||
| Depreciation and amortization | $ 847,622 | $ 1,537,622 |
| X | ||||||||||
- Definition Depreciation, Depletion and Amortization, Property, Plant and Equipment No definition available.
|
| X | ||||||||||
- References No definition available.
|