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Property, plant and equipment - Schedule of property, plant and equipment (Details) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 26,505,903	$ 25,973,037
Less accumulated depreciation and amortization	(2,571,278)	(2,256,269)
Property, plant and equipment, net	23,934,625	23,716,768
Land
Property, Plant and Equipment [Line Items]
Total property and equipment	711,336	704,567
Building and improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	9,284,732	9,244,737
Construction in process
Property, Plant and Equipment [Line Items]
Total property and equipment	6,545,566	6,091,265
Equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	9,743,545	9,713,030
Office furniture and equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	193,333	192,606
Vehicles
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 27,391	$ 26,832

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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