| October 1970 | Takeji Inamura started as sole proprietor in Ayase, Kanagawa Pre. |
| August 1973 | Moved to Ayase Yoshioka |
| September 1975 | Established Inamura Dip Incorporation with capital of JPY 3 mil |
| December 1977 | Developed a fully automatic dipping molding machine |
| June 1979 | Started Ayase Plant and Injection Molding machine |
| June 1981 | Endo factory opened in Fujisawa Endo |
| February 1982 | Acquired UL certificate (File No. E81260) |
| January 1984 | Moved current address, Yoda and started Head Office and Plant |
| January 1984 | Capital increased to JPY 8 mil |
| June 1985 | Introduced PVC Paste Machine |
| August 1986 | Established Nissei Trading, Thailand |
| September 1986 | Takeji Inamura became the president of Nissei Trading |
| October 1986 | Michio Inamura became President of Inamura Dip Inc. |
| August 1987 | Nissei Yamagata Co., Ltd. established |
| September 1990 | Changed Incorporation to Company Limited and increased capital to JPY 20 mil |
| February 1993 | Increased capital to JPY 32 mil |
| August 1993 | Acquired CSA Certificate |
| June 1994 | Started Shanghai Plant |
| October 1996 | Production of extruded tube started in Shanghai |
| August 1998 | Acquired ISO09002 (SGS) |
| April 1999 | Changed Company name to Nissei Eco Co., Ltd. |
| April 1999 | Acquired UL Certificate VW-1 |
| June 1999 | Production of corrugated tube in Tochigi Nasu factory |
| July 2000 | Acquire the adjacent building, increased Capital to JPY 57.6 mil |
| December 2000 | Acquired ISO14001 |
| April 2001 | Production of fiber accessories started |
| May 2001 | Production of injection mold started |
| December 2002 | Acquired “F” Mark of Electrical Appliance Material Control Law |
| February 2003 | Acquired ISO9001-2000 |
| June 2003 | Started production of Catheter of Medical kit |
| November 2003 | Started Hui- Zhou, China Plant |
| September 2004 | Self-manufacture of molding machine started |
| October 2005 | Introduce optical molding machine and design department started |
| November 2005 | NISSEI ECO VIETNAM established and Takashi Asano became president |
| May 2006 | Employee training center expanded in headquarters |
| June 2006 | Successfully developed De-Polyvinyle Chloride “ECO-01” tube and received VW-1 |
| September 2007 | Shanghai received Medical ISO13485 and started production of Medical Tube for use at home |
| November 2008 | Takashi Asano became President & COO |
| January 2009 | Started Tianjin, China Plant |
| April 2009 | Electromagnetic wave absorbing colgated tube developed |
| August 2009 | Japanese Government (Ministry of Economy, Trade & Industry), Approved joint research with Nissei Eco allocating JPY 70 mil |
| September 2009 | Headquarters adjacent land 1800㎡ acquired and machine department expanded |
| May 2010 | Nasu factory expanded 825㎡ to be tube manufacturing and shipment field |
| November 2010 | Successfully developed φ5 Double Corrugated Tube Machine, fastest in the world |
| January 2011 | Transfer the Shanghai factory |
| May 2011 | Indonesia Suruyachiputa industrial 1.7ha acquired |
| August 2011 | Nissei Eco Indonesia established and Takashi Asano as president |
| December 2011 | 8250㎡ factory site acquired in Ayukai industrial estate, Shirataka , Yamagata |
| December 2012 | Started Binh Duong (Ho-Chi-Ming) , Vietnam Plant |
| April 2013 | Started Nissei Eco, Indonesia Plant |
| November 2013 | Manabu Inamura became the CEO of Nissei group, Takashi Asano became the COO of Nisseieco |
| November 2014 | Li Hai Ying became director, deputy general Manager of Shanghai and general manager of Huizhou |
| May 2015 | Nasu factory distribution center completed |
| October 2015 | NISSEI ECO VIETNAM Phase 3 extension 1200㎡ factory space has been completed |
| March 2016 | Vietnam Plant opened Clean Room and started Medical Cannula |
