'''CH. Karnchang Public Company Limited (CK''', ) is a Thai contractor and construction firm, operating in Thailand and Laos.[1][2] The second-largest construction firm in Thailand, CH. Karnchang was founded in 1972 in Bangkok, by Plew Trivisvavet and his four brothers.[3][4] Supamas Trivisvavet became president and CEO in 2015.[5][6]
Bangkok rail transit
CH. Karnchang has constructed various metro lines in Bangkok. In 2024, CH. Karnchang was awarded the tender to conduct design and civil works for the