Samsung Electro-Mechanics to invest $3.14 bil. for substrate plant in Sejong1 report from 1 outlet in 1 language · first reported 2026-09-28 10:47 UTC · updated 2026-09-28 10:47 UTC · JSONEconomy & businessSamsung Electro-MechanicsSejongReportsSamsung Electro-Mechanics to invest $3.14 bil. for substrate plant in Sejongkoreatimes.co.kr · en · 2026-09-28 10:47 UTC