Dear K Laksaman,
Thank you for your support and prompt action,
We’re preparing the letters-Pfizer Thailand in Thai and Pfizer Regional in English) as you advice.
To help with letter preparation and ensure meeting with the customer requirement and , please help answer 2 questions below:
1) Who (person and institution, Address etc) should the letter be addressed to?
2) What should be the key topics covered aside from technical explanation of product shortage?