- Business
- CH. Karnchang Public Company Limited engages in engineering and construction contracting, as well as investment in infrastructure projects. Founded on November 27, 1972, and headquartered at 587 Viriyathavorn Building, Sutthisarnvinijchai Road, Ratchadaphisek, Din Daeng, Bangkok 10400, Thailand, the company undertakes projects for government agencies, state enterprises, and private sector clients as a main contractor or subcontractor; its core construction services encompass mass rapid transit systems such as MRT Orange Line and Purple Line sections, airports including expansions at Suvarnabhumi and Bangkok International, roads and expressways like Rama 3-Dao Khanong and Kanchanaphisek, energy facilities including Xayaburi and Nam Ngum 2 hydroelectric projects, water supply and harbor developments such as Nakhon Pathom-Samut Sakhon and Phuket Deep Sea Port, and buildings like Energy Complex and Somdej Bra Debaratana at Ramathibodi Hospital. Through subsidiaries including CH. Karnchang (Laos) Limited, it operates in Thailand and the Lao People's Democratic Republic, distributing construction materials and providing related services; it also invests in infrastructure via associated companies such as Bangkok Expressway and Metro Public Company Limited (41.15% stake), CK Power Public Company Limited (30.00% stake), and TTW Public Company Limited (19.40% stake), focusing on build-operate-transfer, build-transfer-operate, build-own-operate, and similar models for transportation, mass transit, water, and power systems. Recent developments include the formation of the CKST-OR Joint Venture with Sino-Thai Engineering and Construction Public Company Limited (now Stecon Group Public Company Limited) in November 2024, where CH. Karnchang holds a 51% stake, to execute the THB58.95 billion civil works contract for the MRT Orange Line Bang Khun Non-Min Buri (Suwinthawong) Section West (Bang Khun Non-Thailand Cultural Centre), with a 64-month duration; the group reported a gain on sale and change in status of an investment in associate amounting to THB805 million in Q3 2025, alongside a solid project backlog exceeding THB180 billion as of end-Q3 2025 and sustained revenue growth targeting over THB40 billion for 2025.