Kriengrit Jiajanpong

Part of Ratch Group Public Co. Ltd., Ratch-Lao Services Co. Ltd. provides water services. Chollawit Winitchai has been the CEO of the Thai company since 2021.

Part of CK Power Public Co. Ltd., Southeast Asia Energy Ltd. operates and manages hydroelectric power plants. The company is based in Bangkok, Thailand. The CEO of the Thai company is Somkuan Watakeekul. Southeast Asia Energy was acquired by CK Power Public Co. Ltd. on June 27, 2011 for $109.21 million.

Part of CK Power Public Co. Ltd., Nam Ngum 2 Power Co., Ltd. operates the Nam Ngum 2 hydro power plant. The company is based in Vientiane, Lao People's Democratic Republic.

Hongsa Power Co., Ltd. develops and operates a lignite mine mouth power plant. The private company is based in Vientiane, Lao People's Democratic Republic.

KK Power Co. Ltd. develops and operates power plants.

EGAT Diamond Service Co. Ltd. provides gas turbine refurbishment services. It offers repair of components such as combustor basket, transition piece, turbine bland, and turbine vane. The company was founded in December 2009 and is headquartered in Pathum Thani, Thailand.

Phu Fai Mining Co. Ltd. is a Laotian company that is involved in the mining and sale of sand, gravel, and crushed stone.

Part of Chow Energy Co. Ltd., RICI International Investment Pte Ltd. is a Singaporean company that develops solar power projects. The company is based in Singapore, Singapore. The CEO of the company is Anavin Jiratomsiri. RICI International Investment was acquired by Chow International Co. Ltd. from Ratch Group Public Co. Ltd. on August 11, 2017 for $9.51 million.

Part of Ratch Group Public Co. Ltd., RH International (Singapore) Corp. Pte Ltd. functions as an investment holding Singaporean company. The company is based in Singapore, Singapore.