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LEASES - Other supplemental information of Leases (Details) - USD ($)
6 Months Ended
Sep. 30, 2021
Sep. 30, 2020
LEASES    
Operating lease amortization $ 68,702 $ 1,883
Finance lease amortization 4,566 5,438
Finance lease interest $ 1,212 $ 793
Lease term (years) - operating lease 8 years 9 months  
Lease term (years) - finance lease 2 years 9 months 25 days 1 year 9 months
Lease rate - operating lease 4.50%  
Lease rate - finance lease 3.90% 8.00%