OHD is committed to the research and future development of Respiratory Protection. That is why we have recently partnered with the University of Washington and their School of Public Health.

No matter who you are, there’s always that one sound that makes your toes curl and your skin crawl. Whether it’s terracotta plant pots, nails on a chalkboard or children crying, there are a whole...

OHD has recently partnered with the Chun Shan Medical University and provided them with an OHD Quantifit mask fit testing device. Providing these up and coming students with the capabilities to see...

OHD is committed to the research and future development of Respiratory Protection. That is why we have recently partnered with the Marshall University and their Safety Department.