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Note 7 - Major Customer Concentration
3 Months Ended
Dec. 31, 2019
Notes to Financial Statements  
Concentration Risk Disclosure [Text Block]
Note
7.
Major Customer Concentration
 
For the
three
months ended
December 31, 2019,
three
customers comprised
18%,
13%,
and
10%,
respectively, or
41%
in the aggregate of the Company’s net sales. All
three
of these customers were distributors. For the
three
months ended
December 31, 2018,
two
customers comprised
18%,
and
14%,
respectively, or
32%
in the aggregate of the Company’s net sales. These customers are both distributors. These major customers, like our other customers, purchase our products from time to time through purchase orders, and we do
not
have any agreements that obligate these major customers to purchase products in the future from us.
 
As of
December 31, 2019,
two
customers accounted for
14%,
and
11%,
respectively, or
25%
in the aggregate, of accounts receivable. Both of these customers are distributors. As of
September 30, 2019,
two
customers accounted for
16%,
and
12%,
respectively, or
28%
in the aggregate of accounts receivable. Both of these customers are distributors.