Bhusana Premanode

Total Access Communication Public Co., Ltd. is engaged in the provision of wireless telecommunication services and sale of handsets and accessories. It operates under the Mobile Telephone Service and Related Services; and Sales of Handsets and Starter Kits segments. The company was founded in August 1989 and is headquartered in Bangkok, Thailand.

The International Engineering Public Co. Ltd. engages in the business of trading engineering products, installing and implementing information technology systems, producing and distributing electricity from solar energy, and waste disposal services. It operates under the Telecommunication and Implementation of Information Technology System; and Investment Business segments. The company was founded in 1922 and is headquartered in Bangkok, Thailand.

Part of The International Engineering Public Co. Ltd., Gidec Co., Ltd. is a Thai company that provides waste disposal services. The company is based in Bangkok, Thailand. Gidec Co. was acquired by IEC Green Energy Co. Ltd.

Part of Energy Choice Holding Co. Ltd., IEC Business Partners Co., Ltd. operates as an investment holding Thai company with interest in ethanol production. IEC Business Partners Co. was acquired by Energy Choice Holding Co. Ltd. from The International Engineering Public Co. Ltd. on January 18, 2012 for $0.01 million.

Part of The International Engineering Public Co. Ltd., E Contech Management Pte Ltd. provides consulting services and research on engineering. E Contech Management was acquired by The International Engineering Public Co. Ltd. on January 17, 2014 for $0.10 million.