Annual report pursuant to Section 13 and 15(d)

Inventories (Details)

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Inventories (Details) - USD ($)
Mar. 31, 2022
Mar. 31, 2021
Inventory Disclosure [Abstract]    
Raw materials $ 1,626,000 $ 1,670,000
Finished goods 1,037,000 860,000
Inventories, net $ 2,663,000 $ 2,530,000