Quarterly report pursuant to Section 13 or 15(d)

Warranty provision (Details) - Schedule of warranty provision

v3.20.4
Warranty provision (Details) - Schedule of warranty provision - USD ($)
9 Months Ended
Dec. 31, 2020
Mar. 31, 2020
Schedule of warranty provision [Abstract]    
Balance, beginning of period $ 1,089,356 $ 121,345
Provision for warranty 1,407,420 1,630,541
Expenses incurred (924,343) (662,530)
Balance, end of period $ 1,572,433 $ 1,089,356