Unozawa was established in August 1899 and over century since then, the Company, as specializing manufacturer of pumps and blowers, has been manufacturing various excellent products.
After foundation, the Company manufactured steam pump, boiler feed pump and condensate pump, liquid ring vacuum pump, reciprocating vacuum pump, and pneumatic conveyor, etc.

In 1950, the positive displacement blower and vacuum pump (Roots type), which is used with the paper machine, were developed by the Company for the first time in Japan. Further, in connection with the pollution control equipment, the Company manufactured aeration blower for water treatment.

Unozawa has developed the dry vacuum pump in 1983, which is unparalleled in the world, in advance of other manufacturers. The new pump is exported in quantities to the world.

Further, this pump has been exporting to various companies in the USA, EC and Asian countries. Furthermore, the dry vacuum pump has been finding rapidly spreading fields of application, and is supplied not only semi-conductor manufacturing industry, but also to fine chemical and many other general chemical industries extensively.

We are confident that our products, based on the traditional pioneer and long accumulated technological power of the Company, will contribute to the society in the 21st century and also continue expansive steps forever.