ES designs, fabricates, installs, and supplies quality electrical/instrument systems to power plants, steel mills, petrochemical plants, incineration plants, and other environmental industrial sites in Korea and elsewhere in the rest of the world.

- System engineering (Electrical/Instrument)
- HMI System Eng. (Intouch, FT-View, Win-CC, Design Eng. (AB, Siemens, Schenider, Mitsubishi, LS, Etc.)
- Fabrication and installation of various panels including power distribution panel, MCC panel, power control panel, and cabinet panel
- Power/Cemical /Industrial Plant (Electrical/instrument work)
- Air/Water quality control plant (Electrical/instrument work)
- All other electrical/instrument work pertaining to architectural electrical system and control