Bangkok Metropolitan Region

• Bangkok
• Nonthaburi
• Nakhon Pathom
• Pathum Thani
• Samut Prakan

Central Region

• Ayutthaya
• Nakhon Sawan
• Ban Pong (Ratchaburi)
• Mahachai(Samut Sakhon)
• Saraburi
• Kanchanaburi

Northern Region

• Chiang Mai
• Chiang Rai
• Phetchabun
• Phitsanulok
• Kamphaeng Phet
• Lampang
• Sukhothai

Northeastern Region

• Korat (Nakhon Ratchasima)
• Udon Thani
• Khon Kaen
• Ubon Ratchathani

Eastern Region

• Chon Buri
• Sriracha and Laem Chabang (Amata Nakorn Industrial Estate Industry)
• Pattaya
• Chachoengsao
• Chanthaburi, Rayong

Southern Region

• Hua Hin
• Koh Samui
• Krabi
• Phuket
• Hat Yai (Songkhla)
• Surat Thani
• Nakhon Si Thammarat