GOSEN is the pioneering company for racket strings in Japan.

At a time when natural strings dominated the Japanese market,
GOSEN developed its first synthetic strings.
Since then, the performance and quality of the strings have been recognized,
and they have been used by many users not only in Japan but also throughout the world.

We have been making bold efferts to develop strings superior to
natural ones in line our ruling passion and development policy, expressed through our motto:
“Create products filled with originality.”

Go beyond the possible.


GOSEN racket strings are all Made in Japan.

Racket strings manufactured by GOSEN are all made in Japan. Our factory, located in Hyogo Prefecture, Japan, develops and
manufactures all kinds of synthetic fibers, not just racket strings - for example,
sewing thread for car components, surgical thread, artificial hair and fishing lines.
GOSEN’s technology is even capable of producing micro fibers and
their quality precisely represents the idea of “Made in Japan.”

By making full use of such technological strengths,
we continue to manufacture racket strings for every tennis player.


GOSEN CO., LTD. was established. We began manufacturing fishing line and later started to manufacture and sell badminton racket strings for export by leveraging our manufacturing technologies.
GOSEN string was the first official string approved by the Japan Tennis Association.
Signed a global contract with Rod Laver (Australia), a Grand Slam tennis champion, to promote the GOSEN brand.
Released OG-SHEEP MICRO. Signed with Jimmy Connors and Chris Evert Lloyd, top tennis players at the time, to promote the GOSEN brand (until 1982).
Developed and released OG-SHEEP MICRO SUPER.
When released, this monofilament model offered the highest resilience and durability and even today, 32 years later, it still remains the best-selling single product,
Officially approved by the International Tennis Federation.
Became an official sponsor and stringer for the Japan Open Tennis Championships (until 2013).
Signed with Jim Courier (U.S.A.), ranked number one in the ATP singles rankings at that time, and Gabriela Sabatini (Argentina), ranked number four, to promote GOSEN tennis strings.
We released OG-SHEEP MICRO SUPER JC and OG-SHEEP MICRO GS, which were developed specifically for them.
Signed with Conchita Martinez (Spain) to promote GOSEN tennis strings. She used TECGUT PRO 16.
Singed with Anna Kournikova (Russia), known as the Russian tennis fairy, to promote GOSEN tennis strings and grips.
GOSEN released AK Series tennis strings developed specifically for her.
Developed and released POLYBREAK, the world’s first polyester string with a sea-island structure.
Developed and released G-TOUR1, a polyester string blended specifically for power players.