Environmental engineering, testing and inspection services; Testing, analysis and evaluation of the services of others for the purpose of certification; Testing, analysis and evaluation of the services of others to assure compliance with industry standards; Testing, analysis and evaluation of services of others to assure compliance with (a) heating, ventilation and air conditioning, (b) commissioning and retro-commissionaing of commercial building systems, (c) sound and vibration, (d) commercial building envelope, (e) laboratory fume hood, (f) electronic and biological cleanroom, and (g) other NEBB environmental performance industry standardss and evaluation of the services of others to assure compliance with industry standards