If your requirements cannot be met by any of our standard units, we also build customized special units. Freely configured or based on HovaCAL®, HovaPOR oder HovaGAS– we'll be happy to advise you. Tell us what you need, and we'll design the right unit, system or plant for you. And we're not afraid of custom engineering projects, either. This might include, for example, hydrogen humidification for metallurgical processes, gas mixing plants for fuel gases, OEM modules for mercury calibration or generating explosive and hazardous material traces.