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11. Significant Customers	12 Months Ended
11. Significant Customers	Dec. 31, 2017
Notes to Financial Statements
11. Significant Customers	Sales to the U.S. Government represented approximately 38% and 58% of the Company’s total sales for the years ended December 31, 2017 and 2016, respectively. These sales were primarily to the various government agencies, including those within the United States Department of Defense, the United States Forest Service, the United States Department of Interior, and the United States Department of Homeland Security.