Concentration of Credit Risk

9 Months Ended

Sep. 30, 2017

Note 15. Concentration of Credit Risk

(a)	Concentration of Sales and Accounts Receivable

The following represents customers that accounted for 10% or more of total revenue during the three and nine months ended September 30, 2017 and 2016 and customers that accounted for 10% or more of total trade accounts receivable at September 30, 2017 and 2016.

	Three Months Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
Percentage of net revenue
Customer A		24	%		20	%		22	%		18	%
Customer B		14			30			14			31
Customer C		11			8			11			7

	As of September 30,
	2017			2016
Percentage of gross trade accounts receivable
Customer A		22	%		12	%
Customer B		16			12
Customer C		10			1
Customer D		9			24

(b)	Revenue by Geography

Net revenue by geographic area are as follows. Revenue is attributed by geographic location based on the bill-to location of the Company’s customers.

	Three Months Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
Percentage of net revenue
China		71	%		69	%		71	%		72	%
Other Asia		4			14			10			12
North America		19			12			13			11
Europe		6			5			6			5

Although the Company ships the majority of antennas to its customers in China (primarily Original Design Manufacturers and distributors), the end-users of the Company’s products are much more geographically diverse.

(c)	Concentration of Purchases

During the three and nine months ended September 30, 2017 and 2016, all the Company’s products were manufactured by two vendors in China and by the Company’s facilities in Wisconsin and Arizona.