Greetings
Since our establishment in 1965 as Mihana Seisakusho Co., Ltd., we have been delivering comprehensive development, design, manufacturing, and sales to our customers.
Mihana products are trusted to ensure safety across a wide range of industries, including power and geothermal power plants, hydrogen/urban gas and oil plants, as well as the food and medical/pharmaceutical industries around the world.
As our industry continues to diversify and become more specialized, we actively incorporate opinions from a broad spectrum of employees, regardless of seniority, gender, or nationality. Our young employees are leading the way in product development, constantly experimenting and testing to provide better services to our customers.
We prioritize our customers’ needs, safety, and reliability. Each employee is committed to evolving and growing Mihana Seisakusho, and we appreciate your continued support for our company.
Mihana Seisakusho Co., Ltd.
President and CEO, Kazuaki Miyazaki
Company Overview
| Company Name | Mihana Seisakusho Co., Ltd. |
| Head Office | 4270-8 Higashijo-cho, Kokubu, Kashiwara City, Osaka Prefecture Phone: 072-976-0387 FAX: 072-976-0386 |
| Capital | 30 million yen |
| Representative | President and CEO, Kazuaki Miyazaki |
| Founded | April 1952 |
| Banking Partners |
Osaka City Shinkin Bank, Kokubu Branch Kiyo Bank, Yao Branch |
| Business Activities | Manufacture and sale of safety valves/relief valves, after-sales service |
Company History
| April 1952 | Founded Ikuno Valve Manufacturing Co. in Ikuno Ward, Osaka City |
| April 1965 | Renamed to Mihana Seisakusho Co., Ltd. Capital: 1.5 million yen |
| April 1968 | Constructed a new factory and moved to Habikino City, Osaka Prefecture, for business expansion |
| April 1975 | Constructed a new factory and moved to Kashiwara City, Osaka Prefecture (Kashiwara Iron and Metal Industrial Park) for business expansion |
| January 1983 | Obtained certification as a high-pressure gas facility (room temperature) |
| March 1983 | Increased capital to 30 million yen |
| December 1984 | Developed proprietary lapping technology and became the first in the world to successfully apply it to safety valves Highly recognized in the industry |
| June 1985 | Completed new headquarters building, inspection room, and research lab |
| November 1985 | Obtained certification as a high-pressure gas facility (ultra-low temperature) |
| February 1987 | Established MLP Co., Ltd. |
| March 1988 | Obtained JIS certification as a permitted factory |
| July 1989 | Established [Korea Mihana Co., Ltd. (joint venture)] in Gyeongsangnam-do, South Korea |
| September 1989 | Established [Korea Mihana Trading Company] in Seoul, South Korea |
| September 1989 | Became the first in the world to challenge the endurance test for safety valves, achieving zero leakage after 100 cycles and received certification Highly praised for achievements that rewrote industry standards |
| August 1992 | Received certification for actual discharge coefficient measurement of safety valves |
| January 1996 | Obtained certification as a high-pressure gas facility (expanded size) |
| June 2000 | ISO 9001:1994 Quality System Certification registered |
| March 2002 | Obtained Chinese CSEI certification |
| March 2003 | ISO 9001:2000 Quality System Certification updated |
| February 2005 | Established MTC Co., Ltd. (maintenance and design) |
| February 2006 | Established Ming Valve (Beijing) Valve Co., Ltd. |
| April 2006 | Updated Chinese CSEI certification |
| September 2008 | Updated JIS certification: 2000 edition |
| February 2010 | Obtained Chinese CCS type certification |
| April 2010 | Updated ISO 9001:2008 Quality System Certification |
| April 2010 | Updated Chinese CSEI certification |
| June 2011 | Obtained Korean KGS certification |
| February 2014 | Updated Chinese CCS type certification |
| June 2014 | Updated Korean KGS certification |
| August 2014 | Updated Chinese CSEI certification |
| April 2017 | Updated ISO 9001:2015 Quality System Certification |
| June 2017 | Updated Korean KGS certification |
| February 2018 | Updated Chinese CCS type certification |
| September 2018 | Updated Chinese CSEI certification |
| November 2018 | Updated JIS certification: 2017 edition |
