Nidek Medical Products Inc. (NMP) was founded in 1986 with its original headquarters in Homewood Alabama. It is the oldest manufacturer of oxygen concentrators in the world. We have been in business for 35 years and are the direct descendent of Union Carbide who were the original developers of the PSA (Pressure Swing Adsorption). Nidek Medical Products purchased all of the assets, design, and manufacturing rights from Union Carbide for this system. NMP has its world headquarters and manufacturing facility located in Birmingham AL in a 65,000 square foot facility. We moved into our present location in 1989. In 1999 there was a 10,000-sqft expansion for warehousing. In April 2020 we completed our current expansion to include a 15,000 sqft new warehouse facility to house our growing business.