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Property, plant and equipment and construction in progress (Tables)
12 Months Ended
Dec. 31, 2021
Property, plant and equipment and construction in progress  
Schedule of Property, plant and equipment and construction in progress

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December 31, 

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2021

    

2020

Land

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$

3,316,537

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$

3,566,537

Buildings

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23,255,925

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23,250,843

Plant and equipment

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64,324,377

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63,734,860

Distribution system

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39,780,272

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39,149,063

Office furniture, fixtures and equipment

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3,051,814

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3,083,811

Vehicles

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2,079,874

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1,999,463

Leasehold improvements

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287,980

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274,230

Lab equipment

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12,456

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12,456

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136,109,235

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135,071,263

Less accumulated depreciation

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83,162,696

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77,383,279

Property, plant and equipment, net

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$

52,946,539

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$

57,687,984

Construction in progress

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$

710,863

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$

440,384