Note 12 - Significant Customers

12 Months Ended

Dec. 31, 2015

Notes

Note 12 - Significant Customers

Note 12 - Significant Customers

As of December 31, 2015, Customers A, B, C and D represented 14%, 14%, 13% and 13% of accounts receivable, respectively, and Customers E and F represented 41% and 12% of costs and estimated earnings in excess of billings, respectively.

As of December 31, 2014, Customers E and G represented 23% and 12% of accounts receivable, respectively, and Customers E and H represented 37% and 15% of costs and estimated earnings in excess of billings, respectively.

For the years ended December 31, 2015 and 2014, no individual customer represented 10% or more of total sales.