Dear Mr. Songwut, Thank you for you

Dear Mr. Songwut,
Thank you for your feedback.
I would like to answer your question:
1. Now, we have just found out this problem.
It's nozzle after plating.
I will inform you exact quantity NG later and request you pay money for NG parts.
2. Because this problem occur before plating (same Nozzle 0250), then we must to sort all parts before plating to reduce cost lost.
3. When can you change goods for us? How about the quantity?
If we change all parts for you, we will have not parts for production.
So, please let me know details change goods schedule.
We will consider to send back some parts to you