v3.22.1

Property and Equipment, net | 12 Months Ended
--- | ---
Dec. 31, 2021
Property and Equipment, net |
Property and Equipment, net | Note 5 - Property and Equipment, net Property and equipment consisted of the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31,
​ |  | 2021 |  | 2020
Vehicles | ​ | $ | 644,374 | ​ | $ | 469,399
Equipment | ​ | ​ | 3,759,250 | ​ |  | 1,815,095
Land | ​ | ​ | 174,585 | ​ | ​ | 174,585
Buildings | ​ | ​ | 51,947 | ​ | ​ | 51,947
Leasehold improvements | ​ | ​ | 102,886 | ​ |  | 66,886
Office equipment | ​ | ​ | 4,077 | ​ |  | 5,892
Total property and equipment | ​ | ​ | 4,737,119 | ​ |  | 2,583,804
Less: Accumulated depreciation | ​ | ​ | (1,254,181) | ​ |  | (435,886)
Property and equipment, net | ​ | $ | 3,482,938 | ​ | $ | 2,147,918
​ Depreciation expense was $0.8 million and $0.4 million for the years ended December 31, 2021 and 2020, respectively. During the year ended December 31, 2021, the Company purchased property and equipment totaling $0.5 million in cash. During the year ended December 31, 2021, the Company had $0.2 million of capital expenditures in accounts payable and $0.7 million of capital expenditures financed with notes payable.

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