Quarterly report pursuant to Section 13 or 15(d)

4. Condensed Consolidated Balance Sheets (Details)

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4. Condensed Consolidated Balance Sheets (Details) - USD ($)
Jun. 30, 2018
Mar. 31, 2018
Inventories Details    
Raw materials, net $ 1,466,000 $ 1,619,000
Finished goods, net 1,134,000 1,246,000
Inventories, net $ 2,600,000 $ 2,865,000