Note 17. Concentrations

12 Months Ended

Dec. 31, 2014

Notes

Note 17. Concentrations

NOTE 17.  CONCENTRATIONS

Our principal customers are manufacturers of thin-film solar cells, cell modules, and solar electronic products.  We also serve additional customers involved in various segments of other electronic materials markets. We still expect our sales to continue to be concentrated among a small number of customers in 2015. However, we also expect that our significant customers may change from time to time.

During the year ended December 31, 2014, three customers in China accounted for 21%, 13% and 11% of total sales, respectively. As of December 31, 2014, three customers accounted for 18%, 14% and 13% of total accounts receivable.

During the year ended December 31, 2013, three customers accounted for 12%, 27% and 31% of the total sales.  As of December 31, 2013, three customers accounted for 29%, 13% and 12% of the total accounts receivable.