2. About us
  3. 会社概要・沿革

About us


Company Profile

Company Name Sunarrow Co., Ltd.
main office Orchid Place Hatchobori Building, 4-10-4 Hatchobori, Chuo-ku, Tokyo 104-0032
TEL: 03-3552-5981 (representative)
Fax: 03-3552-5989
Established December 21, 1959
capital 100 million yen
number of employees 112 people, group 467 people
Company executive President and Representative Director: Yuji Tokimune
Director: Akira Nakayasu
Director: Ryo Sato
Auditor: Eiichi Tanaka
Bank Sumitomo Mitsui Banking Corporation (Kyobashi Branch)
Bank of Mitsubishi UFJ (Odenmacho Branch)
Products handled electronics parts
Automotive parts
Medical equipment
Medical products
food-related containers
export destination America
Europe (Sweden/UK)
Asia (China/Singapore/Malaysia/Thailand)
Suppliers Icom Co., Ltd.
Ajinomoto Frozen Foods Co., Ltd.
Iwasaki Tsushinki Co., Ltd.
SMC Co., Ltd.
NEC Platforms Corporation
Oki Electric Industry Co., Ltd.
Casio Computer Co., Ltd.
Sakusa Techno Co., Ltd.
JSR Corporation
Zojirushi Mahobin Co., Ltd.
Daiichiya Baking Co., Ltd.
Tigers Polymer Co., Ltd.
Nagase & Co., Ltd.
Nakayo Co., Ltd.
NHK Spring MEC Co., Ltd.
Nippon Zeon Co., Ltd.
Nidec Mobility Corporation
Pioneer Corporation
Pioneer Fine Tech Co., Ltd.
Fasotec Co., Ltd.
FAMS Co., Ltd.
Fukoku Bussan Co., Ltd.
Furuno Electric Co., Ltd.
Continental Automotive Group
MATSUI EASTERN (Thailand) Co., Ltd.
MI Technologies Pte Ltd.
MURAMOTO ELECTRON (Thailand) Public Co., Ltd.
Panasonic Automotive Systems Asia Pacific (Thailand) Co., Ltd.
UNION ZOJIRUSHI Co.,Ltd (above, alphabetical order / ABC order)

*As of March 1, 2024


Company history and technological progress

1959 December 1959 Established Tokushu Gomu Seisakusho Co., Ltd.
1970 September 1970 Company name changed to Sun Arrow Trading Co., Ltd.
1973 April 1973 Established affiliated company Sunarrow Kasei Co., Ltd.
1983 September 1983 Company name changed to Sunarrow Co., Ltd.
1991 April 1991 Thailand factory operation
2002 July 2002 Sanarrow Mobile Device Co., Ltd. (now Niigata Factory) started operations.
2003 September 2003 Opened Beijing office
2004 January 2004 Xiamen factory operation
Year 2005 September 2005 Merger with Sanarrow Mobile Device Co., Ltd. (now Niigata Factory)


1959 1959 Manufacture and sale of industrial rubber products, watch parts, etc.
1970 1970 Focus on manufacturing and sales of silicone rubber-related products and precision parts
Started development of processing technology for conductive silicone rubber
1973 1973 Started in-house production of conductive silicone rubber
1978 1978 Established processing technology for conductive silicone rubber,
Adopted for switches of remote controllers, electronic musical instruments, and calculators
1985 1985 Telephone market opens with the opening of the fixed-line telephone market
Enter (e.g. rubber click keys)
1992 1992 Produced key sheets (light keys) for mobile phones
2003 2003 Establishment of insert molding technology for PC resin and silicone,
Started production by ATO (Assemble To Order)
2004 2004 Establishment of in-house plating technology,
Local in-house production of mold processing
2007 2007 In-house production of vapor deposition and sputtering
2009 2009 In-house production of UV resin molding technology
2011 2011 In-house production of glass printing technology
2014 2014 Began manufacturing simulated organs with biological textures
Started sales of surgical training products such as simulated organs with biological texture
2015 2015 Deposition technology that does not peel off is adopted for housing parts of smartphones
Started sales of blood vessels for microsurgery training
2016 2016 Started sales of ESD/POEM training model "EndoGel"
2017 2017 Started selling pediatric simulators
2018 2018 Started selling SGOINT “Carbon nanotube compound O-ring”
2019 2019 Establishment of carbon insert molding technology
2020 Reiwa 2 Started sales of SARPLUS “carbon nanotube blended resin”
Establishment of PP + silicone insert technology
2021 Reiwa 3 Started selling SunZero “highly functional insulation paste”
Establishment of high-precision molding technology (LiDAR upper case)
Establishment of 3D Deco Sheet technology
2022 Reiwa 4 Started selling EndoFlower “endoscope attachment hood”
*As this is a medical device, we do not sell it directly.
2024 Reiwa 6 Integrated the manufacturing-related business of Technosad Co., Ltd. and started business as our Sado factory.