-- KUMHO

-- HYUNDAI E&C

-- HYUNDAI Development Company

-- HANJIN Heavy Industries & Construction

-- DAEWOO

-- DAELIM Industiral Company

-- SAMBO Construction Company

-- KOLON Engineering & Construction

-- LOTTE Engineering & Construction

-- DOOSAN Heavy Industires & Construction

-- SK Engineering & Construction

-- SAMSUNG Engineering & Construction

-- SAMSUNG Heavy Industires

-- SAMSUNG Engineering

-- LG Engineering & Construction

-- SSANGYONG Engineering & Construction

-- HANSHIN Construction

-- Seoul Metropolitan Subway Corporation

-- Ministry of National Defense

-- DONGBU Corporation

-- Korea Highway Corporation

-- Public Procurement Service

-- Korean National Housing Corporation

-- SHINDONGAH Construction