Premchai Karnasuta

Thai Pride Cement Co., Ltd. produces and distributes cement. Its products are used for concrete works such as general housing works, bridges, piers, drain pipes, and water tanks. The company was founded in October 2003 and is headquartered in Bangkok, Thailand.

Siam Steel Syndicate Co. Ltd. produces and sells steel bars and rods. Its products include reinforced concrete, round and deformed bars, wire rods, black, square and rectangular pipes. The company was founded by Chaiyudh Karnasuta & Manuel Sy on November 20, 1984 and is headquartered in Bangkok, Thailand.

Saraburi Coal Co. Ltd. explores for and engages in coal mining. The private company is based in Bangkok, Thailand.

Asia Thai Mining Co. Ltd. is a company that mines for minerals. The private company is based in Bangkok, Thailand. and has subsidiaries in Canada.

Italthai Marine Ltd. engages in building naval and commercial vessels. It offers ship building and repair and steel fabrication services. The company was founded on September 22, 1978 and is headquartered in Samut Prakan, Thailand.

Asia Pacific Potash Corp. Ltd. develops & explores potash mineral resources. The company was founded in 1993 and is headquartered in Bangkok, Thailand.

MCRP Construction Corp. is a Filipino company that specializes in the design and construction management of foundation work, including houses and water facilities. The private company is based in Paranaque, Philippines.

Siam Pacific Holding Co. Ltd. is a Thai company that manufactures and sells chemical products. The private company is based in Bangkok, Thailand.

Part of Charoong Thai Wire & Cable Public Co. Ltd., Siam Fiber Optics Co., Ltd. is a company that manufactures and distributes fiber optic cables. The company is based in Bangkok, Thailand.

Sankyu-Thai Co., Ltd. provides freight transportation services. The private company is based in Bangkok, Thailand.

Italthai Industrial Co., Ltd. is a company that is involved in the manufacturing of construction machinery, providing engineering services, real estate development, and operating restaurants. The private company is based in Bangkok, Thailand.

Auo Siam Marine Co., Ltd. provides marine services. It offers marine, drilling, production, well-servicing, and logistic services. It serves the oil and gas exploration industry. The company was founded in 2001 and is headquartered in Bangkok, Thailand.

MCRP Holding Corp. Ltd. functions as an investment holding Filipino company. The private company is based in Pasig, Philippines.

Sino Lao Aluminum Corp. Ltd. is a Laotian company that engages in aluminum exploration.

Part of Italian-Thai Development Public Co., Ltd., Asia Industrial & Port Corp. Co., Ltd. provides port operations services. The private company is based in Bangkok, Thailand.

Orientel Residence Bangkok Co., Ltd. operates hotels. The private company is based in Bangkok, Thailand.

Part of Italian-Thai Development Public Co., Ltd., Italian-Thai Hongsa Co., Ltd. provides mining services. The private company is based in Huai Kwang, Thailand.