CEO says materials group halves Middle East sources, makes plastic from US ethane Thailand's Siam Cement Group has struggled to obtain inputs including naphtha, the key oil-derived material used for plastics.
CEO says materials group halves Middle East sources, makes plastic from US ethane Thailand's Siam Cement Group has struggled to obtain inputs including naphtha, the key oil-derived material used for plastics. © Reuters HO CHI MINH CITY -- Thailand's Siam Cement Group plans to reopen its core plastics plant in Vietnam in mid-2027 after suspending operations due to the closure of the Strait of Hormuz, CEO Thammasak Sethaudom told Nikkei Asia, as the company diversifies its feedstock sources away from the Middle East.