Concentration of Credit Risk (Tables)

9 Months Ended

Sep. 30, 2018

Schedule of 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, 2018 and 2017 and customers that accounted for 10% or more of total trade accounts receivable at September 30, 2018 and 2017.

	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Percentage of net revenue
Customer A	38%		24%		35%		22%
Customer B		9		14		8		14
Customer C		7		11		7		11

	As of September 30,
	2018		2017
Percentage of gross trade accounts receivable
Customer A	24%		22%
Customer B		16		2
Customer C		13		5
Customer D		10		16

Schedule of Revenue by Geographic area

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,
	2018		2017		2018		2017
Percentage of net revenue
China	79%		71%		73%		68%
Other Asia		5		4		6		13
North America		13		19		16		14
Europe		3		6		5		5