Our People. NGH confidently believes and openly recognizes that our greatest assets are found in the people who work for us. Through them we have successfully built a strong foundation of team work, quality work ethic and fairness in our business practices. •Training – Our service technicians have trained and received certification for: OSHA 30-Hour, CPR / First Aid, NFPA 70E Arc Flash, SSTA, Level 4 Telecom, MSHA, and Infrared. •Experience – On average, our employees have worked for NGH for 15 years, helping firmly strengthen the consistency of our Client relationships. •Commitment to professionalism – All associates, whether sales, service or administration staff, work together to attain quality assurance for our customers.