Annual report pursuant to Section 13 and 15(d)

18. Geographic Information (Details - Geographic regions)

v3.20.2
18. Geographic Information (Details - Geographic regions) - USD ($)
12 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Revenues $ 18,936,000 $ 18,970,000
Product [Member]    
Revenues 17,777,000 17,881,000
Product [Member] | Sales Revenue, Segment [Member] | United States [Member]    
Revenues 6,633,000 9,040,000
Product [Member] | Sales Revenue, Segment [Member] | Latin America [Member]    
Revenues 3,684,000 3,962,000
Product [Member] | Sales Revenue, Segment [Member] | Europe and Other [Member]    
Revenues $ 7,460,000 $ 4,879,000