Note 6 - Major Customers

12 Months Ended

Dec. 31, 2017

Notes to Financial Statements

Concentration Risk Disclosure [Text Block]

6

.

Major Customers

For

the year ended

December 31, 2017,

the Company had

two

customers that accounted for approximately

27.5%

and

16.9%

of consolidated net sales. For the year ended

December 31, 2016,

those same

two

customers accounted for approximately

24.6%

and

28.0%

of consolidated net sales. At

December 31, 2017,

the outstanding accounts receivable balances due from these customers were

$2,871,000

and

$3,088,000,

respectively. At

December 31, 2016,

the outstanding accounts receivable balances due from these customers were

$2,842,000

and

$5,512,000,

respectively.