Dear Khun M
Please inform to Koeinmesse Pte Ltd. for revise name is Haruna Asia (Thailand) and address in Thailand.
When pay do not deduct withholding tax because Singapore and Thailand Double Tax Agreement (DTA). But must submit PP.36.
If you transfer money to Koeinmesse Pte Ltd. Please send bank transfer document to us for prepare PP.36 within 7 days from ending month of transfer.