PP= Passport
Your original passport and Physical TIN is all that is required.
You do not need to carry any document.
They have a form you will fill it, can request all your tax copies.
Monthly tax payments is called PND 1 and the yearly one is known as PND 91.
You require 3 years of PND 91 + PND 1 (Jan 2022 -Oct 2022) for PR
The Revenue Dept is at the last in this Soi (alley), do not enter the main building, instead go to the back, there is a 7-eleven and a KrungThai Bank branch, just next to them is the office where they certify tax records.
You will see a board to call out numbers, go inside take your Q and wait, when your Q is called, let them know want certified tax records, fill the form, pay the appropriate fee, wait, get documents.
They do not speak English there, bring someone to translate if you dont speak Thai.
Good Luck.