I'd like to anwser the result checked until now.
Cunico's raw material was not used to arsenic contaminated coil of TNX.
So, we are checking other sources of arsenic, now.
To do this, we check the arsenic content of recent production charge.
The results confirm recent production 12charge's average concentration of arsenic is 37ppm level as below,
so, current raw materials have no arsenic contamination.
Thus, to find arsenic source, we're checking the differance between current raw materials and the arsenic contaminated coil's raw material.
I'll anwser the result ASAP.