Quarterly report pursuant to Section 13 or 15(d)

4. Condensed Consolidated Balance Sheets (Tables)

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4. Condensed Consolidated Balance Sheets (Tables)
6 Months Ended
Sep. 30, 2018
Inventory Disclosure [Abstract]  
Schedule of inventories
    September 30,     March 31,  
    2018     2018  
Raw materials   $ 1,811,000     $ 1,619,000  
Finished goods     1,142,000       1,246,000  
    $ 2,953,000     $ 2,865,000