We got no much time to do this.
The best option is to get the original health certificate and have thai authority to edit the change required. This is the easiest way if you can confirm if DOF can amend the health certificate in compliance with Mexican requirements. Further, any delay will be worse if we have to re-issue a new health ceritcate or made an addendum to the existing one.
Now to save time, we will fedex back the ceritcate back to you hoping the DOF can amened the existing expediently. New ones will require us to apply a new entry completely.
We have been told a letter wont work even from DOF.
Urgently Thanks,
Davy