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REVENUE RECOGNITION (Tables) | 3 Months Ended
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Mar. 31, 2021
REVENUE RECOGNITION |
Disaggregation of revenue by product line | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended March 31,
​ |  | 2021 |  | 2020
Consumables | ​ | $ | 434,179 | ​ | $ | 405,840
Equipment | ​ |  | 322,842 | ​ |  | 296,151
Net sales | ​ | $ | 757,021 | ​ | $ | 701,991

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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=121604090&loc=SL49130545-203045 + Details
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