What to do if the authorized director is unable to sign the document in Thailand?

Panwa: Can do 2 things: First, able to sign certified documents at the Thai embassy. Second, able to have a lawyer who has a license to certify notary public documents.

For more information, please feel free to contact us:

Phones: +66 2 933 9000
Email: bkk@panwa.co.th (Mr.Tana Sipa, Director)
WhatsApp: +66 81.919.6225
LineApp ID: @panwa

Address: 1560 Latphrao Rd., Wangthonglang, Bangkok 10310, Thailand.

Location: https://goo.gl/maps/MhJsbjkPrji51Qyt6

Sky train: Yellow Line, Chokchai 4 Station, Gate 4. Our office is located between Soi Latphrao 50 and 52.