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| History |
| February, 1950 |
Started production of Panel Meters and Illuminometers at 2145 Yorii, Shibukawa, Gunma. |
| September, 1950 |
Establishment of Mitsuhashi Electric Tool Manufacturing Co., Ltd. |
| October, 1952 |
Changed the company name to Nihon Seimitsu Sokki Co., Ltd. |
| July, 1965 |
Started production of Blood Pressure Monitors. |
| October, 1971 |
Establishment of Niigata Keiki Co., Ltd. |
| September, 1975 |
Started marketing of the Digital Blood Pressure Monitor ES-200. |
| May, 1977 |
Purchase of Oze Keiki Co., Ltd. |
| May, 1987 |
Started marketing of Auto Irises for Surveillance Cameras. |
| March, 1995 |
Started exporting of the Wrist Type Digital Blood Pressure Monitor WS-200. |
| May, 1996 |
Certified to ISO-9001 and EN-46001 by TUV SUD Japan. |
| February, 1997 |
Establishment of PT. NSS Indonesia |
| May, 1999 |
Relocation of Head Office to 2508-13, Nakago, Komochi, Kitagunma, Gunma
（Present address: Shibukawa, Gunma） |
| March, 2005 |
Certified to ISO-14001 by TUV SUD Japan. |
| October, 2005 |
Started production of the Pulse Oximeter OX-700 (Oxi-heart). |
| March, 2006 |
Started production of the Portable Air Massager AM-7 (Putifino). |
| August, 2006 |
Establishment of NISSEI International Trading (Shangahi) Co., Ltd. in China |
| October, 2006 |
The Pulse Oximeter OX-700 (Oxi-heart) received a Small and Medium Enterprises Secretary Special Prize and Good Design Award 2006. |
| October, 2006 |
Started prodution of Mercury Image Digital Blood Pressure Monitor DM-3000. |
| February, 2007 |
Relocation of Tokyo Buisiness Office to 2-27-13, Hongo, Bunkyo-ku, Tokyo |
| September, 2007 |
Establishment of Takasaki R&D Center |
| February, 2009 |
Started production of the Pulse Oximeter pulsfit BO-800. |
| November, 2009 |
Started production of the Pulse Oximeter pulsfit BO-600. |
| February, 2010 |
Started production of the Pulse Oximeter pulsfit BO-800DX. |
| March, 2010 |
Establishment of NISSEI Precision Instruments(Suzhou) Co., Ltd. in China |
| June, 2010 |
Relocation of R&D Center to 2-27-13, Hongo, Bunkyo-ku, Tokyo |
| July, 2010 |
Oze Keiki Co., Ltd. (The Surviving company) and Niigata Keiki Co., Ltd.have been merged, and the Surviving company name would be replaced by “NISSEI ON-TECHNO CO., LTD.” |
| September, 2011 |
Started production of the DSK&WSK series.
Clinically validated by ESH(European Society of Hypertension) IP-2010 protocol. |
| February, 2012 |
Started production of the RADCOUNTER DC-100. |
| April, 2013 |
Relocation of Tokyo Buisiness Office and R&D Center to 2-27-18, Hongo, Bunkyo-ku, Tokyo |
| April, 2014 |
Started production of the PulNeo series. |
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