Quarterly report pursuant to Section 13 or 15(d)

4. Inventories (Details)

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4. Inventories (Details) - USD ($)
Sep. 30, 2016
Mar. 31, 2016
Inventories Details    
Raw materials, net $ 1,392,000 $ 1,104,000
Finished goods, net 693,000 536,000
Inventories, net $ 2,085,000 $ 1,640,000