오션엔지니어링

ISO45001 Health and Safety Management System

Construction Safety Management Report

Corporate Credit Rating A- Grade

ESG Comprehensive Evaluation Grade 4

Samsung 4STAR Partner Selection for 5th consecutive year

small and medium enterprise confirmation letter

Samsung Electronics Specialized Installation Store Certificate

Engineering business declaration certificate

Green remodeling business license

Designation of Energy Diagnostic Organization

Certificate of registration of a company specializing in energy conservation

Construction Business Registration Certificate

Fire Protection Business Registration Certificate

Certificate of registration of mechanical equipment performance inspection busines

Real estate development business registration Certificate

Construction Business Registration Certificate (mechanical equipment and engineering business)

Electrical engineering business registration Certificate

Construction Business Registration Certificate (Boring grouting business)

Industrial registration Certificate for groundwater development and use

refrigerant class registration Certificate

confirmation of INOBIZ

Participation in the work-life balance campaign

an affiliated research institut

a parallel work-study project

Energy-saving heat pump cooling and heating system with high efficiency water temperature difference

Geothermal thermo-hygrostat with improved reheating method

Ventilation System Using Heat Pump

Gas Engine Heat Pump

Shrinkage Heat and Cooling System

Heat Pump Chiller