Concentrations of Credit and Other Risks

12 Months Ended

Dec. 31, 2019

Concentrations of Credit and Other Risks

The following customers accounted for 10% or more of our revenues for the periods presented:

*Represents less than 10% of total revenues.

Financial instruments that potentially expose the Company to concentrations of credit risk consist principally of accounts receivable. As of December 31, 2019, two customers accounted for approximately 48% of net accounts receivable. As of December 31, 2018, one customer accounted for approximately 17% of net accounts receivable. No other customers accounted for 10% or more of net accounts receivable in either of these periods.

Year Ended December 31,

Quick Laser Technology Co., Ltd.

Raytheon Company