Dear Khun Narinthip,
You will find, in attachment, Addendum 01 to Quotation 16-06012 rev 03 of 03 August 2016.
This Addendum contains additional terms and conditions articles 12 & 13 confirming our latest discussion for your perusal and approval.
Should you have any further question do not hesitate to consult me at any time.
In the meantime we remain at your service,
Best regards,