Corporate Overview

Koichi Morisaki, President

Our company has grown to be a fine chemical manufacturer in over 50 years since our foundation as a chemical reagent manufacturer. Presently, we are conducting manufacturing of chemical reagents and various chemical products, and commissioned synthesis of new chemical products. All plants, Development Research Institute, Quality Assurance Department and Purchase Department have obtained ISO9001 certification for product quality control and ISO14001 certification for environmental conservation. Saitama Plant and Ibaraki Plant are equipped with GMP-corresponding buildings.

Now is the time of a progressing magnificent industrial revolution which began from IT reformation. We will continue to grow as a company which accurately understands the sense of the new era, supports environment conservation and contributes to social development.

Junsei Chemical Co.,Ltd.

Corporate Overview
Foundation January 1948
Location 4-4-16 Nihonbashi-honcho, Chuo-ku, Tokyo 103-0023
Capital ¥100,000,000
Number of employees 176
Business content
Manufacturing and sales of chemical reagents and chemical products, and commissioned synthesis of chemical products
Plants Saitama, Ibaraki, Tsukuba
Branches/ offices Tohoku / Hokkaido, Toyama, Saitama, Tsukuba, Chiba, Yokohama, Osaka
Research institute Saitama
Banks of account MUFG Bank, Ltd. Mizuho Bank, Ltd. Sumitomo Mitsui Banking Corporation
Junsei Chemical Co.,Ltd.
January 1948 Founded at Kojima Bldg., Nihonbashi-honcho, Chuo-ku, Tokyo. Capital: ¥500,000. Started sales of chemical reagents.
October 1949 Constructed Meguro Plant in Yutenji, Meguro-ku, Tokyo.
October 1951 Constructed Nakano Plant in Numabukuro, Nakano-ku, Tokyo and started manufacturing of chemical reagents. Closed Meguro Plant.
December 1958 Constructed Headquarters building in Nihonbashi-honcho, Chuo-ku, Tokyo.
December 1963 Constructed Saitama Plant in Omano-cho, Koshigaya-City, Saitama. Closed Nakano/ Shimura Plants.
March 1965 Newly constructed a research institute within the land of Saitama Plant.
September 1966 Increased the capital to ¥100,000,000.
December 1974 Increased the capital to ¥150,000,000.
April 1980 Acquired approval of bonded warehouse by Tokyo Customs within Saitama Plant.
March 1985 Constructed Okuma Plant in Ottozawa, Okuma-machi, Fukushima Pref. and expanded production ability of fine chemicals.
March 1988 Constructed Tsukuba Plant in Takasai, Shimotsuma-City, Ibaraki Pref. and expanded production ability of chemical reagents.
March 1994 Constructed the second synthesis building at Okuma Plant.
May 1995 Constructed an electronic industrial medicine manufacturing building within Saitama Plant.
August 1996 Newly constructed manufacturing facility corresponding GMP in the second synthesis building of Okuma Plant.
December 1996 Newly constructed manufacturing facility corresponding GMP in the third manufacturing building of Saitama Plant.
December 1998 I All offices obtained ISO9001 certification for all of our products.
March 1999 Newly constructed the third synthesis building at Okuma Plant.
February 2000 Newly constructed the fourth synthesis building at Okuma Plant.
April 2001 Reconstructed the third manufacturing building at Saitama Plant and constructed a four-story chemical product manufacturing building.
March 2002 Headquarters, 3 plants and all offices obtained ISO14001 certification.
October 2003 Constructed a medicine manufacturing facility and trial manufacture facility in the third synthesis building at Okuma Plant.
October 2004 Established a joint venture company of chemical product manufacturing in Changshu-City, Jiangsu Province, China.
December 2004 Newly constructed the first manufacturing office and administration building at Saitama Plant.
July 2005 Newly constructed the fifth synthesis building at Okuma Plant.
February 2007 Newly constructed the sixth synthesis building at Okuma Plant.
August 2008 Expansion of Inspection Section of Okuma Plant.
March 2011 Okuma plant is occurred by East Japan great earthquake disaster and nuclear plant accident and closed just after constructed the seventh composition ridge.
March 2013 Ibaraki Factory start as a substitute factory of the Okuma factory in Nakagocho, Ibaraki and customized synergy service began.
March 2013 Constructed Ibaraki Plant as a substitute of Okuma plant in Nakago-machi, Ibaraki Pref and Commissioned Manufacturing of Chemical Product service began.
March 2016 Completed the second phase construction at Ibaraki Plant, Constructed the third synthesis building and Contracted synthesis service began.
February 2018 reduced the capital to ¥100,000,000.

Junsei Chemical Co.,Ltd.4-4-16 Nihonbashi-honcho, Chuo-ku, Tokyo 103-0023
Management Headquarters
Administration Department
Accounting Department
TEL 03-3270-5412 FAX 03-3270-5525
Chemical Products Department
TEL 03-3270-5424 FAX 03-3270-5418

Saitama Office
1-6 Omano-cho, Koshigaya-City, Saitama Pref. 343-0844
Sales Headquarters
TEL 048-988-3621 FAX 048-988-6689
Chemical Products Department
TEL 048-940-5881
Trade Department
TEL 048-988-8714 FAX 048-988-3480
Sales Section1
TEL 048-988-3611 FAX 048-988-8713
Sales Section2
TEL 048-988-6161 FAX 048-988-6689
Purchase Department
TEL 048-988-8711 FAX 048-988-8712

Saitama Plant Junsei Chemical Co.,Ltd. Saitama Plant
1-6 Omano-cho, Koshigaya-City, Saitama Pref. 343-0844
TEL 048-986-6161 FAX 048-989-2787

Manufacturing items: Chemical reagents and manufacturing of small and middle-sized chemical products
Saitama Plant
-Management Section
-Production Technology Section
-Reagent Section
Quality Assurance Department
-Inspection Section
Development Research Institute

Tsukuba Plant Junsei Chemical Co.,Ltd. Tsukuba Plant
1417 Takasai, Shimotsuma-City, Ibaraki Pref. 304-0031
TEL 0296-45-0711 FAX 0296-45-0713
Manufacturing item: Manufacturing of liquid reagents
-Management Section
-Production Technology Section
-Inspection Section

Okuma Plant
490-1 Ottozawa-aza-higashidai, Okuma-cho, Futaba-gun, Fukushima Pref. 979-1301
TEL 0240-32-5631 FAX 0240-32-5822
Manufacturing item: Manufacturing of large-scale chemical products
-Management Section
-Production Technology Section
-Inspection Section

*Under closure

FH Junsei Chemical Co.,Ltd. Ibaraki Plant
644-47 Hitana-aza-houtubo, Nakagou-machi, Kitaibaraki-City, Ibaraki Pref. 319-1556
TEL 0293-42-7261 FAX 0293-42-7262
Manufacturing item: Manufacturing of large-scale chemical products
-Management Section
-Production Technology Section
-Inspection Section

Tohoku Branch
1-2-3 Oroshi-machi, Wakabayashi-ku, Sendai-City, Miyagi Pref. 984-0015
TEL 022-283-8245 FAX 022-283-8252

Hokkaido Office
5-4-21-104 Kitago-gojo, Shiroishi-ku, Sapporo-City, Hokkaido 003-0835
TEL 011-874-0151 FAX 011-874-0148

Tsukuba Office
1417 Takasai, Shimotsuma-City, Ibaraki Pref. 304-0031
TEL 0296-43-7711 FAX 0296-43-7714

Chiba Office
57-6 Kubota, Sodegaura-City, Chiba Pref. 299-0242
TEL 0438-62-1151 FAX 0438-62-4181

Yokohama Office
7-8-3 Kamisouyagi, Yamato-City, Kanagawa Pref. 242-0029
TEL 046-264-6971 FAX 046-264-6975

Osaka Office
1F, TN Honmachibashi Bldg., 6-6 Honmachibashi, Chuo-ku, Osaka-City, Osaka Pref. 540-0029
TEL 06-6940-3091 FAX 06-6940-3092

Toyama Office
1-11-28 Namajima, Toyama-City, Toyama Pref. 930-0801
TEL 076-433-3100 FAX 076-433-0417