The other SEZs will be in Tak, Sa Kaew, Trat, Mukdahan and Nong Khai.
The rental rates will be raised by 15 per cent every five years, or 3 per cent on an annual basis. If an industrial estate makes an investment in a zone, a 30-per-cent discount on the rent will be given.
Songkhla's zone has the most expensive one-off rental payment because of its central location.
The Tak zone is second at Bt500,000 per rai, followed by Sa Kaew at Bt450,000 and Trat, Mukdahan and Nong Khai at Bt320,000.
In a related development, PTT
Global Chemical will sign a business-cooperation pact with the Saha Group and the Commerce Ministry's Department of International Trade Promotion tomorrow.
Under the pact, products and packaging will be developed and so will industrial land and a "plastic cluster" at the SEZ in Mae Sot, Tak. The energy and commerce ministers will preside over the event.
Verapong Chaiperm, governor of the Industrial Estate Authority of Thailand (IEAT), said the body expected to complete its study and design work for the construction of industrial estates at the SEZs in Sa Kaew and Tak within six months.
Prime Minister Prayut
Chan-o-cha wants to see construction begin on these two estates by late next year.
The IEAT plans to invest about Bt1.5 million per rai for the proposed 775-rai (124-hectare) industrial estate in Tak and the proposed 655-rai estate in Sa Kaew.