ロゴマーク中国精螺株式会社 CHUGOKU SEIRA CO., LTD.

Yuruson

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History

July 1985
Yuruson is established with a capital of 5 million yen in Takaya-cho, Higashihiroshima-shi, and starts the production of bolts.
June 1989
Patent rights acquired for locking nuts (Yuruson nuts).
February 1991
Head Office relocated to Hachihonmatsu-cho, Higashihiroshima-shi.
Plant relocated to Kouchi-cho, Kamo-gun, Hiroshima-ken, and production of weld nuts starts.
April 1991
Technical tie-up with Boltun Corporation (Taiwan).
February 1993
Rights acquired from Disc-Lock International (USA) for the sale of locking nuts (D-Lock nuts) in nine countries in Asia, including Japan.
Application submitted for utility model registration for locking bolts (Y-Lock bolts).
October 1993
D・L・Y, a distributor of D-Lock nuts, established in Japan (with 10 member companies).
April 1994
Exclusive agency agreement concluded with Keyang Electric Machinery Co., Ltd. (Korea) for D-Lock nuts in Korea.
June 1994
Exclusive agency agreement concluded with Harlin International Co., Ltd. (Taiwan) for D-Lock nuts in Taiwan.
September 1994
Technical tie-up with Taeyang Metal Ind. Co., Ltd. (Korea).
November 1994
Capital increased to 10 million yen, application submitted for utility model registration for new weld nut.
January 2001
Head Office and plant relocated to current location (Hachihonmatsu Iida, Higashihiroshima-shi).
September 2001
OKUMOTO Tetsushi appointed company president. Started new business, such as secondary processing.
November 2007
Trading started with Ni-Thai Engineering Co., Ltd. (Thailand)
October 2008
ISO9001 2000 certification acquired.
October 2009
ISO9001 2008 certification acquired.
October 2017
ISO9001 2015 certification acquired.