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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($)
Mar. 31, 2022
Dec. 31, 2021
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES    
Equipment parts inventory $ 690,948 $ 731,863
Finished goods inventory 327,743 161,918
Sales demo inventory 862,090 885,514
Work in process inventory 43,247 11,657
Total inventory $ 1,924,028 $ 1,790,952