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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($)
Jun. 30, 2022
Dec. 31, 2021
Dec. 31, 2020
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES      
Equipment parts inventory $ 727,997 $ 731,863 $ 690,070
Finished goods inventory 181,715 161,918 181,453
Sales demo inventory 647,790 885,514 1,281,564
Work in process inventory 47,425 11,657 19,240
Total inventory $ 1,604,926 $ 1,790,952 $ 2,172,327