| 1917-01 |
Founder Hideo Murayama's father, Arisuke, began manufacturing and selling "Suke Pharmaceutical" in Suetomo, Fukuoka Prefecture. |
| 1924-11 |
Established "Taio Pharmaceutical Partnership" in Chikugo City, Fukuoka Prefecture. |
| 1927-01 |
Established in July 1947 (January 1917) |
| 1927-01 |
Founded (January, 1927). |
| 1938-11 |
Relocated to Higashi-ku, Fukuoka City and renamed "Tengyo Co." |
| 1944-06 |
Disbanded and temporarily ceased operations due to wartime corporate consolidation (a system to merge all pharmaceutical companies in the prefecture into one). |
| 1947-07 |
Re-established after the war as "Tetsu Pepton Pharmaceutical Ltd." |
| 1948-01 |
Re-established as "Tengyo Co., Ltd." as a sales company. |
| 1950-07 |
Merged "Tengyo Co., Ltd." into "Tetsu Pepton Pharmaceutical Ltd." and renamed the company "Tengyo Pharmaceutical Ltd." |
| 1952-07 |
Renamed the company to "Tengyo Pharmaceutical Industry Co., Ltd." |
| 1971-01 |
Joined the Murotaki Group. |
| 1996-11 |
Newly built and relocated headquarters plant to Omuta City, Fukuoka Prefecture. |
| 1998-08 |
Renamed the company to "Murotaki Chemical Co., Ltd." |
| 1999-09 |
Established a second pharmaceutical plant. |
| 1999-10 |
Obtained ISO 9001 certification. |
| 2003-04 |
New logistics warehouse established adjacent to headquarters |
| 2005-05 |
Establishment of Tenyo Pharmaceutical Co., Ltd. |
| 2005-09 |
Opening of Tokyo branch |
| 2006-06 |
Commencement of operations at health food manufacturing plant |
| 2006-11 |
Commencement of operations at surface treatment plant |
| 2009-07 |
Completion of new office |
| 2010-03 |
Commencement of operations at compound plant |
| 2010-08 |
Withdrawal from surface treatment business |
| 2010-12 |
Establishment of Murakami (Shanghai) Trading Co., Ltd. |
| 2011-02 |
New establishment of third pharmaceutical plant |
| 2011-03 |
Commencement of operations at urea water plant |
| 2011-10 |
Acquisition of Tsukuba plant from Murakami TechnoS Co., Ltd. |
| 2013-10 |
Completion of Shinshō warehouse |
| 2013-11 |
Relocation of Tokyo branch to Kanda Surugadai, Chiyoda-ku, Tokyo |
| 2014-10 |
Acquisition of 100% of shares of Tōshin Chemical Co., Ltd., making it a wholly-owned subsidiary |
| 2014-12 |
Merger of Murakami Chemical Co., Ltd. and Murakami TechnoS Co., Ltd., commencing operations as Murakami Chemical Co., Ltd. |
| 2016-06 |
New establishment of ink adhesive plant at Tsukuba facility |
| 2016-10 |
Withdrawal from functional resin compound business |
| 2016-11 |
New establishment of pharmaceutical jelly plant at Ōmuta headquarters |
| 2017-05 |
Absorption merger of Tōshin Chemical Co., Ltd. |
| 2017-08 |
Opened a pharmaceutical synthesis plant at the Oomuta headquarters. |
| 2018-06 |
Absorbed Tenyo Pharmaceutical Co., Ltd. |
| 2019-12 |
Change of CEO: Teruo Murayama became Chairman of the Board; Atsushi Aoki became CEO. |
| 2019-12 |
Closed the Saitama factory. |
| 2020-01 |
Opened the Saitama Development Center in Wakō City, Saitama Prefecture. |
| 2021-02 |
Listed on the JASDAQ (Standard) market of the Tokyo Stock Exchange. |
| 2024-06 |
Relocated the Saitama Development Center to Kashiwa City, Chiba Prefecture, and renamed it the Pharmaceutical Development Center. |
| 2026-05 |
Exited the health food business. |
