Dear Khun Anupong
Please see the answer to question as below:
1. Supplier says will do open machine, and make a stir before and then scoop up Chemical.
2. In addition to this 2 process is plating process except acid electrolysis and acid, doesn’t affect the value of d.
Dear Khun Nichada and All concern,
Please see the document for Item PE 3,4 and PE 5 as attach file.
If you have any question, please contact to me anytime.
Best Regards,
Nittaya