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Accounting policies (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2021
Accounting policies |
Schedule of Estimated useful lives | ​
​ | ​ | ​
Buildings |  | 5 to 40 years
Plant and equipment |  | 4 to 40 years
Distribution system |  | 3 to 40 years
Office furniture, fixtures and equipment |  | 3 to 10 years
Vehicles |  | 3 to 10 years
Leasehold improvements |  | Shorter of 5 years or lease term
Lab equipment |  | 5 to 10 years
Schedule of Disaggregation of revenue | The following table presents the Company’s revenue disaggregated by revenue source. ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Year Ended December 31,
​ |  | 2021 |  | 2020
Retail revenue | ​ | $ | 22,104,953 | ​ | $ | 22,952,370
Bulk revenue | ​ |  | 26,800,869 | ​ |  | 24,312,546
Services revenue | ​ |  | 13,884,857 | ​ |  | 12,937,859
Manufacturing revenue | ​ |  | 4,072,823 | ​ |  | 12,425,351
Total revenue | ​ | $ | 66,863,502 | ​ | $ | 72,628,126
​

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130545-203045 + Details
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