GS E&C (formerly known as Lucky Development) is an EPC (engineering, procurement, and construction) contractor specializing in architecture, civil engineering, petrochemical, and power plants construction activities. The company constructs roads, railways, water reservoirs, ports, industrial parks, and underground structures, buildings for residences, offices, factories, schools, hospitals, and department stores, and other retail centers. It also builds petroleum refineries, gas, petrochemical, waste, water treatment plants, as well as cycle, nuclear, coal, and renewable power plants, etc.